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Homonyms

IRMNG homonym list - genus level - Initial letter = "U" (176)

Please note, this is a provisional homonyms list from IRMNG on 2024-11-21, and is subject to change. It may include nomina nuda, rejected and otherwise non-current names, plus some published misspellings, in addition to homonyms that have been validly published. A small proportion of duplicate entries awaiting rationalisation may also be included.

Click on any genus name for additional details, as currently available.

Ua
 Ua Girault, 1929 accepted as Odopoia Walker, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Torymidae (Family)
     Ua Solounias, Smith & Rios Ibàñez, 2022 † accepted as Ua Solounias, Smith & Rios Ibàñez, 2022 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Giraffidae (Family)

Ubaghsia
     Ubaghsia Oppenheim, 1899 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Ubaghsia Jullien, 1886 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)

Uber
 Uber Philippi, 1853 accepted as Polinices Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)
     Uber Cotton & Godfrey, 1931 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)

Uca
     Uca Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Ocypodidae (Family)
 Uca Latreille, 1819 accepted as Ucides Rathbun, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Ucididae (Family)

Udaria
     Udaria D.K. Singh, S. Majumdar & D. Singh, 2018 accepted as Ramudaria D.K. Singh, S. Majumdar, D. Singh & E.A. Molinari Novoa, 2020 (junior homonym)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lophocoleaceae (Family)
     Udaria A. Gupta, 1996 † · Fungi (Kingdom) > Fungi incertae sedis (Phylum) > (Class) > (Order) > (Family)

Uddmania
     Uddmania Frey, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Uddmania Bergroth, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Udora
     Udora Münster, 1839 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Procaridoidea (awaiting allocation) (Family)
 Udora Nuttall, 1818 accepted as Elodea A. Michaux, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Hydrocharitaceae (Family)

Udorius
 Udorius Broun, 1882 accepted as Hydora Broun, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elmidae (Family)
 Udorius Lucas, 1920 accepted as Udorius Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryopidae (Family)

Ueckermannia
     Ueckermannia Kazmierski, 1996 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Ueckermannia Chant & McMurtry, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)

Ugandella
     Ugandella Schmidt, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)
     Ugandella Sjöstedt, 1923 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Uhleria
 Uhleria Crawford, 1914 accepted as Lasiopsylla Froggatt, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Psyllidae (Family)
 Uhleria Comstock, 1883 accepted as Fiorinia Targioni-Tozzetti, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Uhleriella
     Uhleriella Ball, 1902 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Jassidae (Family)
     Uhleriella Matsumura, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)

Uhligia
     Uhligia Koenen, 1904 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ammonoidea (awaiting allocation) (Family)
     Uhligia Horak, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mordellidae (Family)

Uhligina
     Uhligina Schubert, 1899 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Uhligina Yabe & Hanzawa, 1922 † accepted as Eorupertia Yabe & Hanzawa, 1925 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Victoriellidae (Family)

Uighuroniscus
     Uighuroniscus Su, 1985 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)
     Uighuroniscus Su, 1980 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)

Uintasorex
     Uintasorex Matthew, 1909 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Microsyopidae (Family)
 Uintasorex Brown & Rose, 1976 † accepted as Uintasorex Matthew, 1909 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Microsyopidae (Family)

Ulaikoilia
 Ulaikoilia Bílý & Kubáň in Bílý, Kubáň & Volkovitsh, 2009 accepted as Melobasina Kerremans, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Ulaikoilia Bílý & Kubán, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Ulania
     Ulania Qi, 1990 † accepted as Ulanodon Bai & Qi, 2022 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Hyracodontidae (Family)
     Ulania Lin & Zhang, 1979 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
 Ulania Kirby, 1892 accepted as Ulamia Möschler, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)

Ulea
 Ulea Müller Hal., 1897 accepted as Uleastrum W.R. Buck, 1985 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Orthotrichaceae (Family)
 Ulea J. Schröter, 1892 accepted as Uleiella J. Schröter, 1894 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Ustilaginales (Order) > Uleiellaceae (Family)

Ulema
     Ulema Megerle, 1832 accepted as Ulema Megerle, 1832 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Ulema Bedel, 1889 accepted as Oulema Des Gozis, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Uleopsis
     Uleopsis Thériot, 1936 (uncertain)· Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Dicranaceae (Family)
     Uleopsis F. Fedde in F. Fedde & K. Schuster, 1911 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Commelinales (Order) > Commelinaceae (Family)

Ullia
 Ullia Roewer, 1943 accepted as Carlotta Roewer, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)
     Ullia Henningsmoen, 1949 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)

Ulmiphyllum
 Ulmiphyllum G. Andreánszky, 1959 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosales (awaiting allocation) (Family)
     Ulmiphyllum Fontaine, 1889 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Ulmites
 Ulmites J.W. Dawson, 1891 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliopsida (awaiting allocation) (Order) > (Family)
     Ulmites Endlicher, 1848 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Ulmaceae (Family)

Ulmoxylon
 Ulmoxylon E. Hofmann, 1939 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Ulmaceae (Family)
     Ulmoxylon P. Kaiser, 1879 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Ulmaceae (Family)

Ulmus
     Ulmus Distant, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tingidae (Family)
     Ulmus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Ulmaceae (Family)

Ulna
 Ulna accepted as Ulua Jordan & Snyder, 1908 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
     Ulna Capuse, 1973 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Ulocerus
     Ulocerus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Ulocerus Dalman, 1824 accepted as Ulocerus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Ulochaetes
     Ulochaetes LeConte, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Ulochaetes Thomson, 1861 accepted as Ulochaetes LeConte, 1854 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Uloma
 Uloma Rafinesque, 1837 accepted as Colea Bojer ex C.F. Meisner, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)
     Uloma Stephens, 1829 accepted as Gnatocerus Thunberg, 1814 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Uloma Fauvel, 1904 accepted as Gnatocerus Thunberg, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Uloma Stephens, 1832 accepted as Gnatocerus Thunberg, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Uloma Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Uloma Latreille in Cuvier, 1829 accepted as Uloma Dejean, 1821 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Ulomoides
     Ulomoides Blackburn, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Ulomoides Escalera, 1927 accepted as Platycrypticus Español, 1951 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Uloporus
 Uloporus Quélet, 1886 accepted as Gyrodon Opatowski, 1836 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Paxillaceae (Family)
 Uloporus Casey, 1889 accepted as Enneboeus Waterhouse, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Archeocrypticidae (Family)

Uloptera
 Uloptera Burmeister, 1842 accepted as Uloptera Burmeister, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Uloptera Fenzl, 1843 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Ulosomus
 Ulosomus Schoenherr, 1826 accepted as Neoulosomus O'Brien & Wibmer, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Ulosomus Schönherr, 1825 accepted as Acalles Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Ulospermum
 Ulospermum A. Pomel, 1849 † accepted as · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Ulospermum Link, 1821 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Ulostoma
     Ulostoma Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Ulostoma D. Don ex G. Don, 1837 accepted as Gentiana Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianaceae (Family)

Ulotrichella
 Ulotrichella Y. Berger-Perrot, 1981 accepted as Chlorothrix Y. Berger-Perrot in Y. Berger-Perrot & J.C. Thomas, 1982 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulotrichales (Order) > Ulotrichaceae (Family)
     Ulotrichella Iyengar, 1975 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Chlorococcaceae (Family)

Ulrichia
     Ulrichia Kinzelbach, 1971 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Stylopidae (Family)
     Ulrichia Jones, 1890 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Palaeocopida (Order) > Bolliidae (Family)

Ulricholithus
     Ulricholithus Bancroft & Lamont, 1949 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Ulricholithus Bancroft, 1933 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Ulugbekia
     Ulugbekia Savchenko, 1970 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)
     Ulugbekia Zakirov, 1961 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Uluguria
     Uluguria Vezda, 2004 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Gomphillaceae (Family)
     Uluguria Richards, 1965 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Uluguria Hoffman, 1964 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Gomphodesmidae (Family)
     Uluguria Otte, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Gryllidae (Family)

Ulula
     Ulula Cuvier, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Ulula Rambur, 1842 accepted as Ululodes Currie in Smith, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Ascalaphidae (Family)

Ulva
     Ulva Lindsey, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Ulva Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Ulva Linnaeus, 1753 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)

Ulvaria
     Ulvaria Ruprecht, 1850 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)
     Ulvaria Jordan & Evermann, 1896 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Stichaeidae (Family)

Ulvella
     Ulvella P.L. Crouan & H.M. Crouan, 1859 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvellaceae (Family)
     Ulvella (Nylander) V. Trevisan, 1880 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Umbella
     Umbella Scudder, 1882 accepted as Umbella Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Umbella V.P. Maslov in E.V. Bykova, 1955 † accepted as Umbellina Loeblich & Tappan, 1961 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Umbellinales (Order) > Umbellinaceae (Family)
     Umbella d'Orbigny in Sagra, 1841 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Umbellula
 Umbellula E.F. Morris, 1955 accepted as Pseudobotrytis Krzemieniewska & Badura, 1954 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Coniochaetales (Order) > Coniochaetales incertae sedis (Family)
     Umbellula Cuvier, 1797 · Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Umbellulidae (Family)
 Umbellula Cuvier, 1800 accepted as Umbellula Cuvier, 1797 · Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Umbellulidae (Family)
 Umbellula Gray, 1870 accepted as Umbellula Cuvier, 1797 · Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Umbellulidae (Family)
 Umbellula K.B. Korde, 1973 † accepted as Palaeoumbellula E.A. Molinari-Novoa & M.D. Guiry, 2021 † · Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > Epiphytaceae (Family)

Umbellularia
     Umbellularia Lamarck, 1801 accepted as Umbellula Cuvier, 1797 (junior objective synonym)· Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Umbellulidae (Family)
     Umbellularia (C.G.D. Nees) Nuttall, 1842 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)

Umbilicaria
     Umbilicaria Heister ex Fabricius, 1759 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Umbilicaria G.F. Hoffmann, 1789 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Umbilicariales (Order) > Umbilicariaceae (Family)

Umbilicus
     Umbilicus A.P. de Candolle, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Crassulaceae (Family)
     Umbilicus Duan & Cao, 1989 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)

Umbla
 Umbla Rapp, 1854 accepted as Salvelinus Richardson, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
 Umbla Catesby, 1771 accepted as Umbla Catesby, 1771 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sphyraenidae (Family)
 Umbla Bonaparte, 1846 accepted as Umbla Bonaparte, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Esociformes (Order) > Umbridae (Family)

Umbonella
 Umbonella A. Adams, 1863 accepted as Isanda H. Adams & A. Adams, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
 Umbonella Hincks, 1880 accepted as Umbonula Hincks, 1880 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Umbonulidae (Family)

Umbotrochus
 Umbotrochus Thiele, 1924 accepted as Callumbonella Thiele, 1924 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Umbotrochus Perner, 1903 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Umbra
 Umbra Gronovius, 1763 accepted as Umbra Gronovius, 1763 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Esociformes (Order) > Umbridae (Family)
     Umbra Kramer in Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Esociformes (Order) > Umbridae (Family)
     Umbra Scopoli, 1777 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Esociformes (Order) > Umbridae (Family)
     Umbra Cetti, 1777 accepted as Umbrina Cuvier, 1816 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sciaenidae (Family)

Umbraculum
     Umbraculum Gottsche, 1861 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Metzgeriales (Order) > Hymenophytonaceae (Family)
 Umbraculum O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
     Umbraculum Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Umbraculida (Order) > Umbraculidae (Family)

Umbraticus
     Umbraticus Voet, 1806 accepted as (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Umbraticus Özdikmen, 2009 accepted as Tomogonopus Sierwald & Mauriès, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Spirostreptida (Order) > Spirostreptidae (Family)

Umbrina
     Umbrina Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sciaenidae (Family)
     Umbrina Robineau-Desvoidy, 1830 accepted as Umbrina Robineau-Desvoidy, 1830 (taxon inquirendum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Unaus
     Unaus Gray, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Unaus Rafinesque, 1815 accepted as Unaus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Unaüs
     Unaüs Rafinesque, 1815 accepted as Unaus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Unaüs Gray, 1821 accepted as Unaus Gray, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Uncaria
 Uncaria Burchell, 1822 accepted as Harpagophytum A.P. de Candolle ex Meisner, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Pedaliaceae (Family)
     Uncaria Schreber, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Uncina
     Uncina Kaplun in Kaplun & Krupchenko, 1991 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Uncinulidae (Family)
     Uncina Quenstedt, 1850 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Uncinidae (Family)

Uncinaria
     Uncinaria Frölich, 1789 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Ancylostomatidae (Family)
 Uncinaria H.G.L. Reichenbach, 1841 accepted as Uncaria Schreber, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Uncinaria Vest, 1867 accepted as Vestia Hesse, 1916 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Uncinata
     Uncinata Bullington, 1940 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Urostylida (Order) > Urostylida incertae sedis (Family)
 Uncinata Bian & Shi, 2018 accepted as Phlugiolopsis Zeuner, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Uncinia
 Uncinia Velenovský, 1934 accepted as Hamatocanthoscypha M. Svrček, 1977 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Hyaloscyphaceae (Family)
     Uncinia Quatrefages, 1865 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Spionida (Order) > Spionidae (Family)
     Uncinia Persoon, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Uncinulella
     Uncinulella Del Guercio, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Uncinulella Hara, 1936 accepted as Erysiphe R. Hedwig ex A.P. de Candolle, 1805 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Erysiphales (Order) > Erysiphaceae (Family)

Uncinulina
     Uncinulina Terquem, 1862 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Aspidochirotida (Order) > Aspidochirotida (awaiting allocation) (Family)
     Uncinulina Bayle, 1878 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Trigonirhynchiidae (Family)

Uncopodarke
     Uncopodarke Uchida, 2004 accepted as Uncopodarke Uchida in Uchida et al., 2019 (unavailable name)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Microphthalmidae (Family)
     Uncopodarke Uchida in Uchida et al., 2019 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Microphthalmidae (Family)

Unda
     Unda Ponomarenko in Arnol'di, Zherikhin, Nikritin & Ponomarenko, 1977 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trachypachidae (Family)
 Unda Schaeffer, 1926 accepted as Vannella Bovee, 1965 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Discosea (Class) > Glycostylida (Order) > Vannellidae (Family)

Undaria
     Undaria Suringar, 1873 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Laminariales (Order) > Alariaceae (Family)
     Undaria Muir-Wood & Cooper, 1960 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Monticuliferidae (Family)
 Undaria Oken, 1815 accepted as Agaricia Lamarck, 1801 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Agariciidae (Family)

Undariella
     Undariella Y.E. Petrov & O.G. Kusakin ['Kussakin'], 1997 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Laminariales (Order) > Alariaceae (Family)
 Undariella Y.P. Lee, 1998 accepted as Undariopsis K. Miyabe & K. Okamura in K. Okamura, 1902 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Laminariales (Order) > Alariaceae (Family)

Undella
     Undella Jörgensen, 1925 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Undella Daday, 1887 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Oligotrichida (Order) > Undellidae (Family)

Underwoodia
     Underwoodia C.H. Peck, 1890 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Pezizales incertae sedis (Family)
     Underwoodia Cook & Collins, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Caseyidae (Family)

Undina
     Undina E.M. Fries, 1825 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Nostocaceae (Family)
     Undina Gistl, 1848 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Ophidiasteridae (Family)
     Undina Münster, 1834 † · Animalia (Kingdom) > Chordata (Phylum) > Sarcopterygii (Class) > Coelacanthiformes (Order) > Latimeriidae (Family)
 Undina Dana, 1849 accepted as Undinula A. Scott, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Calanidae (Family)
     Undina Gould, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Ungeria
 Ungeria Salfeld, 1908 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)
     Ungeria H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Ungula
 Ungula B.A. Barlow, 1964 accepted as Amyema Van Tieghem, 1894 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
     Ungula Termier & Termier, 1977 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Ungula Pander, 1830 † accepted as Obolus Eichwald, 1829 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)

Ungulaspis
     Ungulaspis MacGillivray, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
 Ungulaspis Afanassieva & Karatajūtė-Talimaa, 1998 † accepted as Paraungulaspis Afanassieva & Karatajūtė-Talimaa, 2013 † · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Cephalaspidiformes (Order) > Cephalaspidiformes (awaiting allocation) (Family)

Ungulina
     Ungulina Bosc, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Ungulinidae (Family)
 Ungulina Patouillard, 1900 accepted as Fomes (E.M. Fries) E.M. Fries, 1849 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)

Ungulites
 Ungulites Bronn, 1848 † accepted as Obolus Eichwald, 1829 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)
     Ungulites Stauffer, 1933 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta incertae sedis (Family)
     Ungulites Zhuravleva, 1972 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Discosorida (Order) > Discosorida (awaiting allocation) (Family)

Unica
     Unica Šnoflák, 1951 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Unica Gorbach, 1985 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)

Unicarinata
     Unicarinata Pan, 1982 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Unicarinata Sheng, Li & Sun, 2022 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Unicinaria
 Unicinaria Linstow, 1902 accepted as Uncinaria Frölich, 1789 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Ancylostomatidae (Family)
 Unicinaria Westerlund, 1884 accepted as Vestia Hesse, 1916 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Unicola
 Unicola accepted as Unciola Say, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Unciolidae (Family)
 Unicola Haldeman, 1842 accepted as Unionicola Haldeman, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Unionicolidae (Family)
     Unicola Rafinesque, 1815 accepted as Unicola Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Unicornu
     Unicornu Grateloup, 1835 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Unicornu Fabricius, 1823 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Unicornus
 Unicornus Montfort, 1810 accepted as Acanthina Fischer von Waldheim, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Unicornus Rafinesque, 1815 accepted as Rhinoceros Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)

Unidens
 Unidens Schinz in Cuvier, 1822 accepted as Monodonta Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Unidens Hayward & Kawagata, 2012 † accepted as Unidens Hayward & Kawagata, 2012 † (taxon inquirendum)· Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Stilostomellidae (Family)

Unifolium
 Unifolium Zinn, 1757 accepted as Unifolium Zinn, 1757 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Unifolium Ludwig, 1757 accepted as Maianthemum F.H. Wiggers, 1780 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)

Uniplicaria
     Uniplicaria Pfeiffer, 1856 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Uniplicaria Martens, 1895 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Unkana
     Unkana Matsumura, 1935 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Unkana Distant, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Unxia
     Unxia Thomson, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Unxia Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Uphantenia
     Uphantenia Vanuxem, 1842 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
 Uphantenia Dawson & Hinde, 1889 † accepted as Uphantenia Dawson & Hinde, 1889 † · Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Upogebia
     Upogebia Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Upogebiidae (Family)
 Upogebia Borradaile, 1903 accepted as Upogebia Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Upogebiidae (Family)

Uptiotes
     Uptiotes Walckenaer, 1833 accepted as Uptiotes Walckenaer, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Uloboridae (Family)
     Uptiotes Walckenaer, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Uloboridae (Family)

Uracanthus
     Uracanthus Fitzinger, 1865 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Uracanthus Diesing, 1861 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
     Uracanthus Hope, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Uraeus
 Uraeus Wagler, 1830 accepted as Naja Laurenti, 1768 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Elapidae (Family)
     Uraeus Agassiz, 1832 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Amiiformes (Order) > Caturidae (Family)

Uragus
     Uragus Keyserling & Blasius, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Uragus Rafinesque, 1815 accepted as Uragus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Uragus Guérin-Méneville, 1844 accepted as Vianauragus Monné, 2006 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Uralella
     Uralella K.B. Korde, 1957 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Uralella Makridin, 1960 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)

Uralia
     Uralia Lipina, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
 Uralia Licharew, 1925 † accepted as Eolyttonia Fredericks, 1924 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Lyttoniidae (Family)
     Uralia Mulsant & Verreaux, 1866 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Uralia Kukalova-Peck & Sinichenkova, 1992 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Insecta (awaiting allocation) (Order) > Insecta (awaiting allocation) (Family)
     Uralia Martynova, 1976 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)
     Uralia E.F. Tschirkova-Zalesskaja, 1957 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Trimerophytopsida (Class) > Trimerophytales (Order) > Trimerophytales (awaiting allocation) (Family)

Uralina
 Uralina Schuchert & Le Vene, 1929 † accepted as Eolyttonia Fredericks, 1924 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Lyttoniidae (Family)
 Uralina Rozhdestvenskaya, 1962 † accepted as Uralinova Kempf, 2015 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Gotlandellidae (Family)

Uralites
     Uralites B.I. Tchuvashov, 1973 † · Plantae (Kingdom) > Algae incertae sedis (Phylum) > Algospongia (Class) > Moravamminales (Order) > Uralitaceae (Family)
     Uralites Tchernov, 1907 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Uralophyllum
     Uralophyllum A.N. Kristofovic, 1933 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Uralophyllum Sochkina, 1936 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Digonophyllidae (Family)

Uralopora
     Uralopora Sokolov, 1951 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)
     Uralopora Sokolov, 1950 † accepted as Uralopora Sokolov, 1951 † (nomen nudum)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Uramyia
 Uramyia Macquart, 1843 accepted as Uramya Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Uramyia Agassiz, 1846 accepted as Uramya Robineau-Desvoidy, 1830 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Urana
     Urana Coelho & Nessimian, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Urana Melichar, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Urania
     Urania Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Uraniidae (Family)
 Urania Schreber, 1789 accepted as Ravenala Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Strelitziaceae (Family)
 Urania A.P. de Candolle, 1855 accepted as Urania A.P. de Candolle, 1855 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Uranocentron
     Uranocentron Gray, 1840 accepted as Uranocentron Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Uranocentron Gray, 1831 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Tropiduridae (Family)

Uranops
     Uranops Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Uranops Hemming, 1929 accepted as Lysandra Hemming, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Uranoscopus
 Uranoscopus Gronow, 1763 accepted as Cottus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Cottidae (Family)
     Uranoscopus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Uranoscopidae (Family)

Uranthera
 Uranthera Naudin, 1845 accepted as Acisanthera P. Browne, 1756 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
 Uranthera Pax & K. Hoffmann in Engler, 1911 accepted as Phyllanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)

Uraptera
 Uraptera Müller & Henle, 1837 accepted as Rioraja Whitley, 1939 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Rajiformes (Order) > Rajidae (Family)
     Uraptera Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Urartucoris
     Urartucoris Puchkov, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)
     Urartucoris Kment, Fent & Japoshvili, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)

Urasterella
     Urasterella M'Coy, 1851 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Uractinida (Order) > Urasterellidae (Family)
     Urasterella Schuchert, 1914 † accepted as Urasterella M'Coy, 1851 † (unavailable name)· Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Uractinida (Order) > Urasterellidae (Family)

Urbanella
 Urbanella Pierre, 1890 accepted as Pouteria Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
     Urbanella Schepotieff, 1912 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Urbanella Malakhova, 1963 † accepted as Urbanellina Brenckle, 2022 † (junior homonym)· Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Endothyridae (Family)

Urbania
     Urbania Mikšič, 1963 accepted as Miksicus Özdikmen & Turgut, 2009 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Urbania R.A. Philippi, 1891 accepted as Junellia Moldenke, 1940 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
     Urbania Hampson in Romanoff, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Urbania Vatke, 1875 accepted as Urbania Vatke, 1875 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Urceola
     Urceola Quélet, 1886 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
 Urceola Vandelli, 1788 accepted as Urceola Vandelli, 1788 · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae incertae sedis (Family)
     Urceola Roxburgh, 1799 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Urceolaria
 Urceolaria Acharius, 1803 accepted as Diploschistes Norman, 1853 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Thelotremataceae (Family)
     Urceolaria Stein, 1854 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Peritrichida (Order) > Urceolariidae (Family)
 Urceolaria Molina, 1810 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Urceolaria Molina ex J.D. Brandis, 1786 accepted as Urceolaria Molina ex J.D. Brandis, 1786 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Urceolaria Willdenow in Cothenius, 1790 accepted as Schradera Vahl, 1796 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Urceolaria A.W. Jannsen, 2005 accepted as Cuvierina Boas, 1886 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Cavoliniidae (Family)
 Urceolaria Hooker, 1821 accepted as Aspicilia A. Massalongo, 1852 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Pertusariales (Order) > Megasporaceae (Family)
     Urceolaria Bonorden, 1851 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Pezizales incertae sedis (Family)
 Urceolaria Herbert, 1821 accepted as Urceolina H.G.L. Reichenbach, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Urceolaria Lamarck, 1801 accepted as Rotaria Scopoli, 1777 · Animalia (Kingdom) > Rotifera (Phylum) > Bdelloidea (Class) > Bdelloida (Order) > Philodinidae (Family)

Urceolina
     Urceolina H.G.L. Reichenbach, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Urceolina Tuckerman, 1875 accepted as Orceolina Hertel, 1970 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Agyriales (Order) > Trapeliaceae (Family)

Urceolus
     Urceolus C. von Mereschkowsky, 1877 · Protozoa (Kingdom) > Euglenozoa (Phylum) > Peranemea (Class) > Peranemida (Order) > Peranemidae (Family)
 Urceolus Velenovský, 1939 accepted as Resupinatus C.G.D. Nees ex S.F. Gray, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)

Urda
     Urda Münster, 1840 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Isopoda (awaiting allocation) (Family)
     Urda Reiche in Sturm, 1843 accepted as Urda Reiche in Sturm, 1843 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Uresipedilum
 Uresipedilum Oyewo & Sæther, 1998 accepted as Polypedilum Kieffer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Uresipedilum Sasa & Okazawa, 1991 accepted as Uresipedilum Oyewo & Sæther, 1998 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
 Uresipedilum Sasa in Sasa & Kikuchi, 1995 accepted as Uresipedilum Oyewo & Sæther, 1998 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Uria
     Uria Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Alcidae (Family)
 Uria Möhring, 1758 accepted as Uria Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Laridae (Family)
     Uria Kirby & Spence, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Uria Gistel, 1848 accepted as Phaleria Latreille, 1802 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Urnula
 Urnula Wiesner, 1931 accepted as Ammopemphix Loeblich, 1952 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Hemisphaeramminidae (Family)
     Urnula E.M. Fries, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Sarcosomataceae (Family)
     Urnula Claparède & Lachmann, 1857 · Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Suctorida (Order) > Urnulidae (Family)

Urnularia
 Urnularia Stapf, 1901 accepted as Willughbeia Roxburgh, 1820 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Urnularia P.A. Karsten, 1866 accepted as Chaetosphaeria L.R. Tulasne & C. Tulasne, 1863 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Chaetosphaeriales (Order) > Chaetosphaeriaceae (Family)

Urocentrum
     Urocentrum Nitzsch in Ersch & Gruber, 1827 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Hymenostomatida (Order) > Urocentridae (Family)
 Urocentrum Wiegmann, 1835 accepted as Uracentron Kaup, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Tropiduridae (Family)

Urocentrus
 Urocentrus von Düben, 1845 accepted as Beryx Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beryciformes (Order) > Berycidae (Family)
 Urocentrus Kner, 1868 accepted as Pholis Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Pholidae (Family)

Urocryptus
     Urocryptus Westwood, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eupelmidae (Family)
 Urocryptus Temminck, 1838 accepted as Saccopteryx Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Emballonuridae (Family)

Uroctonoides
 Uroctonoides Hoffmann, 1931 accepted as Paruroctonus Werner in Bronn, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Vaejovidae (Family)
 Uroctonoides Chamberlin, 1920 accepted as Teuthraustes Simon, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Chactidae (Family)

Urocyclon
     Urocyclon Song & Wilbert, 2000 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Uronematidae (Family)
     Urocyclon Small & Lynn, 1985 accepted as Urocyclon Song & Wilbert, 2000 (nomen nudum)· Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Uronematidae (Family)

Urocystis
     Urocystis Rabenhorst ex Fuckel, 1870 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Urocystidiales (Order) > Urocystidaceae (Family)
     Urocystis Villot, 1880 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Hymenolepididae (Family)

Urodiscus
 Urodiscus Berlese, 1917 accepted as Nenteria Oudemans, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Nenteriidae (Family)
     Urodiscus Sclater, 1860 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Urodon
 Urodon Schönherr, 1823 accepted as Bruchela Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
     Urodon Turczaninow, 1849 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Urolepis
     Urolepis Walker, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
     Urolepis Bellotti in Stoppani, 1857 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Urolepis (A.P. de Candolle) R.M. King & H.E. Robinson, 1971 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Uroleptes
     Uroleptes Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Uroleptes Wagler, 1830 accepted as Tamandua Gray, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Myrmecophagidae (Family)

Uroleptopsis
     Uroleptopsis Kahl, 1932 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Urostylida (Order) > Pseudokeronopsidae (Family)
 Uroleptopsis Dragesco, 1970 accepted as Uroleptopsis Kahl, 1932 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Holostichidae (Family)

Uromya
     Uromya Rollier, 1913 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Uromya Rondani, 1856 accepted as Uromyia Meigen, 1838 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Uronectes
     Uronectes Bronn, 1850 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Anaspidacea (Order) > Uronectidae (Family)
 Uronectes Günther, 1862 accepted as Liparis Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Liparidae (Family)

Uronema
     Uronema Lagerheim, 1887 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chaetophorales (Order) > Uronemataceae (Family)
     Uronema Dujardin, 1841 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Uronematidae (Family)

Uronemus
     Uronemus Agassiz, 1844 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Dipnoi (Class) > (Order) > Uronemidae (Family)
     Uronemus Rafinesque, 1815 accepted as Uronemus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)

Uronyx
     Uronyx Rafinesque, 1832 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Uronyx Rafinesque, 1815 accepted as Uronyx Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Urophora
 Urophora Sommerfelt ex Arnold, 1899 accepted as Bacidia G. De Notaris, 1846 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Lecanorales (Order) > Ramalinaceae (Family)
     Urophora Gray, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aetalionidae (Family)
     Urophora Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Urophyllum
 Urophyllum K.H.E. Koch, 1857 accepted as Urospatha H.W. Schott, 1853 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)
     Urophyllum Wallich in Roxburgh, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Uroplata
     Uroplata Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Uroplata Guérin-Méneville, 1844 accepted as Uroplata Chevrolat in Dejean, 1836 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Uroptera
     Uroptera Rafinesque, 1815 accepted as Uroptera Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Uroptera Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Uropterus
 Uropterus Lacordaire, 1866 accepted as Uroptera Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Uropterus Latreille, 1828 accepted as Uroptera Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Uropteryx
 Uropteryx Agassiz, 1846 accepted as Ourapteryx Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Uropteryx Agassiz, 1835 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Urosoma
     Urosoma Spencer, 1930 † · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Oegophiurida (Order) > Euzonosomatidae (Family)
     Urosoma Kowalewski, 1882 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Oxytrichidae (Family)

Urospatha
     Urospatha Salvadori, ? 1869 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Urospatha H.W. Schott, 1853 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)

Urospina
 Urospina Sellnick, 1932 accepted as Trichouropoda Berlese, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Trematuridae (Family)
 Urospina von Gelei, 1944 accepted as Urospinula Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Spirofilidae (Family)

Urospora
 Urospora Fabre, 1879 accepted as Urosporella G.F. Atkinson, 1897 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Xylariales (Order) > Xylariales incertae sedis (Family)
 Urospora Fayod, 1889 accepted as Panellus P.A. Karsten, 1879 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Mycenaceae (Family)
     Urospora J.E. Areschoug, 1866 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulotrichales (Order) > Ulotrichaceae (Family)
     Urospora Schneider, 1875 · Chromista (Kingdom) > Miozoa (Phylum) > Paragregarea (Class) > Velocida (Order) > Urosporidae (Family)

Urostylis
     Urostylis C.F. Meisner, 1839 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Urostylis Westwood in Hope, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Urostylididae (Family)

Urotheca
     Urotheca Matthew, 1899 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Annelida (awaiting allocation) (Class) > Annelida (awaiting allocation) (Order) > Annelida (awaiting allocation) (Family)
 Urotheca Gilg in Engler & Prantl, 1897 accepted as Gravesia Naudin, 1851 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Urotheca Cocteau & Bibron in Sagra, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Urothemis
     Urothemis Hagen, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Urothemis Brauer, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Libellulidae (Family)

Urotropis
     Urotropis Silvestri, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Spirostreptida (Order) > Spirostreptidae (Family)
     Urotropis Jiménez de la Espada, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Plethodontidae (Family)
 Urotropis Rafinesque, 1822 accepted as Cryptobranchus Leuckart, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Cryptobranchidae (Family)

Uroxys
 Uroxys Rafinesque, 1818 accepted as Gymnura van Hasselt, 1823 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Rajiformes (Order) > Rajidae (Family)
     Uroxys Westwood, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Uroxys Rafinesque, 1815 accepted as Uroxys Rafinesque, 1818 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Rajiformes (Order) > Rajidae (Family)

Ursia
     Ursia Barnes & McDunnough, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Ursia I.T. Vassilczenko, 1979 accepted as Trifolium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Ursina
     Ursina Jordan, 1964 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Ursina Sinev, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Stathmopodidae (Family)

Ursinella
 Ursinella O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Desmidiales (Order) > Desmidiaceae (Family)
     Ursinella Eddy & McCollum, 1998 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Corynexochida (awaiting allocation) (Family)

Urtica
 Urtica Borlase, 1758 accepted as · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Actiniaria incertae sedis (Family)
     Urtica Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)

Urus
 Urus Bojanus, 1827 accepted as Bison Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Urus Swainson, 1835 † accepted as Bison Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Urus C.H. Smith, 1827 accepted as Bos Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Urvillea
     Urvillea Kunth in Humboldt, Bonpland & Kunth, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
     Urvillea Kirkaldy, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cixiidae (Family)

Usingeria
     Usingeria Schouteden, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aradidae (Family)
 Usingeria Coetzee & Segerman, 1992 accepted as Rusingeria Coetzee & Kment, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cimicidae (Family)

Usofila
     Usofila Marx, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Usofila Keyserling, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Telemidae (Family)

Ussuria
     Ussuria Diener, 1895 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ussuriidae (Family)
 Ussuria Nikolskii, 1903 accepted as Misgurnus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cobitidae (Family)
 Ussuria N.N. Tzvelev, 2001 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
     Ussuria S.I. Nevolina, 1984 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
 Ussuria Danilevsky, 1995 accepted as Ussurella Danilevsky, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Ussuriella
     Ussuriella Paramonow, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhagionidae (Family)
 Ussuriella Sosnina, 1956 † accepted as Kahlerina Kochansky-Devidé & Ramovs, 1955 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Verbeekinidae (Family)

Usteria
     Usteria Willdenow in Cothenius, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Loganiaceae (Family)
 Usteria A.W. Dennstedt, 1818 accepted as Acalypha Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Usteria Batista & H. Maia, 1962 accepted as Mycousteria M.L. Farr, 1986 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Usteria Medikus, 1790 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Usteria Cavanilles, 1793 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Utahia
     Utahia Gazin, 1958 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Omomyidae (Family)
 Utahia N.L. Britton & Rose, 1922 accepted as Pediocactus N.L. Britton & J.N. Rose in N.L. Britton & A. Brown, 1913 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Utania
     Utania G. Don, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Loganiaceae (Family)
     Utania Sukacheva, 1982 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)

Ute
 Ute Dendy & Row, 1913 accepted as Ute Dendy & Row, 1913 · Animalia (Kingdom) > Porifera (Phylum) > Calcarea (Class) > Sycettida (Order) > Grantiidae (Family)
     Ute Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Calcarea (Class) > Sycettida (Order) > Grantiidae (Family)
 Ute Chun, 1889 accepted as Tinerfe Chun, 1898 · Animalia (Kingdom) > Ctenophora (Phylum) > Tentaculata (Class) > Cydippida (Order) > Haeckeliidae (Family)

Uterosomus
     Uterosomus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
     Uterosomus Schönherr, 1839 accepted as Uterosomus Dejean, 1834 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Utica
 Utica Hewitson, 1865 accepted as Theclinesthes Röber, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Utica White, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Varunidae (Family)
     Utica White, 1847, nom. nud. accepted as Utica White, 1847 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Varunidae (Family)

Utinga
 Utinga Wilcox & Pimentel, 1989 accepted as Belemiana Ponting, 2021 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mydidae (Family)
     Utinga Marcus, 1949 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Petraliellidae (Family)

Utinomia
 Utinomia Takeda & Tamura, 1981 accepted as Utinomiella Kropp & Takeda, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Cryptochiridae (Family)
     Utinomia Tomlinson, 1963 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cirripedia (awaiting allocation) (Order) > Cirripedia (awaiting allocation) (Family)
 Utinomia Galkin, 1986 accepted as Galkinius Perreault, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Sessilia (Order) > Pyrgomatidae (Family)

Utriculopsis
 Utriculopsis M. Sars, 1870 accepted as Philine Ascanius, 1772 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Philinidae (Family)
     Utriculopsis Sars, 1868 accepted as Utriculopsis M. Sars, 1870 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Cylichnidae (Family)

Utriculus
 Utriculus Schumacher, 1817 accepted as Conus Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Conidae (Family)
 Utriculus T. Brown, 1844 accepted as Retusa T. Brown, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Retusidae (Family)

Uva
     Uva Gray, 1842 accepted as Uva Gray, 1842 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Uva V.P. Maslov, 1956 † accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Bryopsidales (Order) > Codiaceae (Family)
     Uva Playfair, 1914 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Spondylomoraceae (Family)
 Uva O. Kuntze, 1891 accepted as Uvaria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)

Uxia
     Uxia Walker, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Uxia Jousseaume, 1887 † accepted as Unitas Palmer in Harris & Palmer, 1947 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Cancellariidae (Family)

Uzeliella
 Uzeliella Bagnall, 1908 accepted as Aptinothrips Haliday, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)
 Uzeliella Poppius, 1911 accepted as Poppiella Bergroth, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
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