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Homonyms

IRMNG homonym list - genus level - Initial letter = "J" (168)

Please note, this is a provisional homonyms list from IRMNG on 2024-10-06, 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.

Jaapia
     Jaapia Lindinger, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
 Jaapia Kirschstein, 1938 accepted as Dothiora E.M. Fries, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideales (Order) > Dothioraceae (Family)
     Jaapia Bresadola, 1911 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Boletales incertae sedis (Family)

Jacea
 Jacea P. Miller, 1754 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Jacea Haller, 1768 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Jacea Opiz in Berchtold & Opiz, 1839 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Violaceae (Family)

Jackia
 Jackia K.P.J. Sprengel, 1826 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Jackia Wallich in Roxburgh, 1824 accepted as Jackiopsis C.E. Ridsdale, 1979 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Jacksonia
     Jacksonia Heath, 1997 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Jacksonia Theobald, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Jacksonia R. Brown ex J.E. Smith in A. Rees, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Jacksonia Hort. ex von Schlechtendal accepted as Jasminum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Oleaceae (Family)
 Jacksonia Collenette, 1937 accepted as Jacksoniana Nye in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Jacksonia Rafinesque ex E.L. Greene, 1891 accepted as Polanisia Rafinesque, 1819 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Cleomaceae (Family)
 Jacksonia J.C. Lindquist, 1970 accepted as Dietelia Hennings, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniosiraceae (Family)

Jacksoniella
 Jacksoniella J.C. Lindquist, 1972 accepted as Dietelia Hennings, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniosiraceae (Family)
 Jacksoniella M.N. Kamat & A.V. Sathe, 1972 accepted as Dietelia Hennings, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniosiraceae (Family)
     Jacksoniella Denis, 1931 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)

Jacobaea
 Jacobaea J. Burman ex O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jacobaea P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Jacobella
     Jacobella Jeannet, 1908 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Jacobella Passendorfer, 1930 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Jacobella Mercier, 1935 † accepted as Cenomanaster Wright, 1951 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Valvatida (awaiting allocation) (Family)
     Jacobella Swanson, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Hemicytheridae (Family)
 Jacobella Patte, 1926 † accepted as Austriellula Strand, 1928 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Norellidae (Family)

Jacobia
     Jacobia Arnaud, 1952 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricomycetes incertae sedis (Order) > Agaricomycetes incertae sedis (Family)
 Jacobia Schmidt, 1956 accepted as Hasarius Simon, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
 Jacobia Contu, 1998 accepted as Rickenella Raithelhuber, 1973 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricomycetes incertae sedis (Order) > Agaricomycetes incertae sedis (Family)

Jacobsiella
     Jacobsiella Harz, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
     Jacobsiella Rübsaamen, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Jacobsonia
     Jacobsonia Berlese, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
     Jacobsonia Boedijn, 1935 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiaceae (Family)
 Jacobsonia Koschantschikov, 1912 accepted as Apsteiniella Schmidt, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Jacobsonia Medvedev, 1970 accepted as Chrysolina Motschoulsky in Schrenck, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Jacobsonia Cameron, 1936 accepted as Berca Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Jacobsoniella
     Jacobsoniella Melichar, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Jacobsoniella Forsius, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Jacotella
     Jacotella Banks, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Gymnodamaeidae (Family)
     Jacotella Munro, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Jacquemontia
 Jacquemontia Bélanger, 1834 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jacquemontia J.D. Choisy, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)

Jacquesia
 Jacquesia de Saint Laurent & McLaughlin, 1999 accepted as Pagurojacquesia de Saint Laurent & McLaughlin in Forest, de Saint Laurent, McLaughlin & Lemaitre, 2000 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Paguridae (Family)
     Jacquesia Mendes, 1944 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Megadesmidae (Family)

Jaculus
     Jaculus Jarocki, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Jaculus Erxleben, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Dipodidae (Family)

Jacutiella
     Jacutiella K.B. Korde, 1964 † accepted as Jacutiella K.B. Korde, 1964 † (nomen dubium)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Seletonellaceae (Family)
     Jacutiella V.A. Samylina, 1956 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Nilssoniales (Order) > Nilssoniaceae (Family)

Jaegeria
     Jaegeria Kunth in Humboldt, Bonpland & Kunth, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Jaegeria Bell, 1887 accepted as Actinopyga Bronn, 1860 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)
     Jaegeria Bajpai, Kapur, Thewissen, Tiwari & Das, 2005 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)

Jaera
     Jaera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janiridae (Family)
     Jaera Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Jagoria
     Jagoria Strahl, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Jagoria Karsch, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Aeshnidae (Family)

Jahnia
     Jahnia Růžička & Prantl, 1960 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Praecardioida (Order) > Antipleuridae (Family)
 Jahnia Pittier & S.F. Blake, 1929 accepted as Turpinia Ventenat, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Crossosomatales (Order) > Staphyleaceae (Family)

Jaisalmeria
     Jaisalmeria † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)
     Jaisalmeria Sahni, 1955 † accepted as Jaisalmeria † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)

Jaliscoa
     Jaliscoa S. Watson, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jaliscoa Boucek, 1993 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Jalla
     Jalla Hahn, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
 Jalla Giglio-Tos, 1907 accepted as Zouza Strand, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Dactylopterygidae (Family)

Jalmenus
     Jalmenus Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Jalmenus Liebke, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Jamaica
     Jamaica Koçak & Kemal, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Jamaica Hamilton, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphrophoridae (Family)

Jamesia
     Jamesia Christophers, 1906 accepted as Culex Linnaeus, 1758 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
     Jamesia Jekel, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Jamesia J. Torrey & A. Gray, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cornales (Order) > Hydrangeaceae (Family)
 Jamesia Rafinesque, 1832 accepted as Jamesia Rafinesque, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Jamesia C.G.D. Nees in Wied-Neuwied, 1840 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Jamesonia
 Jamesonia Dusbábek, 1967 accepted as Eudusbabekia Jameson, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Myobiidae (Family)
 Jamesonia Bolivar, 1909 accepted as Jasomenia Bolivar, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Jamesonia Jacoby, 1895 accepted as Gabonia Jacoby, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Jamesonia W.J. Hooker & Greville, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)

Jaminaea
     Jaminaea M. Sipiczki & E. Kajdacsi ex T. Kijpornyongpan & M.C. Aime, 2017 · Fungi (Kingdom) > Basidiomycota (Phylum) > Exobasidiomycetes (Class) > Microstromatales (Order) > Microstromatales incertae sedis (Family)
 Jaminaea M. Sipiczki & E. Kajdacsi, 2009 accepted as Jaminaea M. Sipiczki & E. Kajdacsi ex T. Kijpornyongpan & M.C. Aime, 2017 · Fungi (Kingdom) > Basidiomycota (Phylum) > Exobasidiomycetes (Class) > Microstromatales (Order) > Microstromatales incertae sedis (Family)

Jaminea
 Jaminea de Folin, 1870 accepted as Pseudoscilla Boettger, 1901 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Jaminea Gray, 1847 accepted as Jaminia Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)

Jaminia
     Jaminia Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)
 Jaminia T. Brown, 1827 accepted as Myosotella Monterosato, 1906 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ellobiida (Order) > Ellobiidae (Family)
     Jaminia Leach, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Janacekia
     Janacekia Larsson, 1984 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Neopereziida (Order) > (Family)
     Janacekia Růžička & Řehoř in Hajkr, Lukasova, Růžička & Řehoř, 1975 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Solemyida (Order) > Solemyidae (Family)

Janassa
 Janassa Boeck, 1871 accepted as Parajassa Stebbing, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Ischyroceridae (Family)
     Janassa Münster, 1839 † · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Petalodontiformes (Order) > Petalodontiformes (awaiting allocation) (Family)

Janeia
 Janeia Stefani, 1914 † accepted as Janiopsis Rovereto, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
     Janeia King, 1850 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Solemyida (Order) > Solemyida (awaiting allocation) (Family)

Janella
 Janella Grateloup, 1838 accepted as Athoracophorus Gould in Wilkes, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Athoracophoridae (Family)
 Janella Gray, 1850 accepted as Athoracophorus Gould in Wilkes, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Athoracophoridae (Family)

Janenschia
     Janenschia Gothan, 1927 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Janenschia Wild, 1991 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Archosauria (awaiting allocation) (Order) > Archosauria (awaiting allocation) (Family)

Janetia
     Janetia Forel, 1899 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Janetia M.B. Ellis, 1976 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Janetia Kieffer, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Janetiella
     Janetiella Kieffer, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Janetiella Berlese, 1904 accepted as Urojanetia Berlese, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Trachyuropodidae (Family)

Jania
 Jania Bellardi, 1873 † accepted as Janiopsis Rovereto, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
     Jania J.V.F. Lamouroux, 1812 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Corallinaceae (Family)
 Jania J.A. Schultes & J.H. Schultes in J.J. Roemer & J.A. Schultes, 1830 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
     Jania M'Coy, 1844 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Janickia
 Janickia accepted as Janickina E. Chatton in Grassé, 1953 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Discosea (Class) > Glycostylida (Order) > Paramoebidae (Family)
 Janickia Rašín, 1929 accepted as Sanguinicola Plehn, 1905 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Diplostomida (Order) > Aporocotylidae (Family)

Janinella
     Janinella Neustrueva, 1989 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Janinella Albuquerque, Boulanouar & Coineau, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Microparasellidae (Family)

Janiopsis
     Janiopsis Rovereto, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
 Janiopsis Bouillon, 1980 accepted as Merga Hartlaub, 1914 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Pandeidae (Family)

Janira
 Janira Oken, 1815 accepted as Hormiphora L. Agassiz, 1860 · Animalia (Kingdom) > Ctenophora (Phylum) > Tentaculata (Class) > Tentaculata incertae sedis (Order) > Tentaculata incertae sedis (Family)
 Janira Schumacher, 1817 accepted as Pecten O. F. Müller, 1776 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Pectinidae (Family)
     Janira Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
 Janira Risso, 1818 accepted as Galathea Fabricius, 1793 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Galatheidae (Family)
     Janira Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janiridae (Family)

Janirella
 Janirella Sayce, 1901 accepted as Heterias Richardson, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janiridae (Family)
     Janirella Bonnier, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janirellidae (Family)

Janius
     Janius Havlicek, 1957 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Cyrtiidae (Family)
     Janius Kim & Boxshall, 2020 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Notodelphyidae (Family)

Jankowskia
     Jankowskia D.H. Mai, 1987 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliopsida (awaiting allocation) (Order) > (Family)
     Jankowskia Alekperov, 1984 (uncertain)· Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
     Jankowskia Oberthür, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Jansenia
 Jansenia Barbosa Rodrigues, 1891 accepted as Plectrophora Focke, 1848 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Jansenia Chaudoir, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Jansonia
     Jansonia Bates, 1891 accepted as Jansenia Chaudoir, 1865 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
     Jansonia Bedel, 1891 accepted as Jansenia Chaudoir, 1865 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
 Jansonia S.A.J. Pocock, 1972 † accepted as Bajociana E.A. Molinari-Novoa & M.D. Guiry, 2021 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > (Family)
     Jansonia Schürhoff, 1937 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Jansonia R. Kippist, 1847 accepted as Gastrolobium R. Brown in W.T. Aiton, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Janthe
     Janthe Studer, 1884 accepted as Ianthe Bovallius, 1881 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Janiroidea incertae sedis (Family)
 Janthe Stål, 1867 accepted as Antianthe Fowler, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Janthe Grisebach, 1844 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Janthe Marseul, 1865 accepted as Galbella Westwood, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Janulus
     Janulus Thorell, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
     Janulus Lowe, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Endodontidae (Family)

Janus
 Janus Vérany, 1844 accepted as Janolus Bergh, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Proctonotidae (Family)
 Janus Koch, 1846 accepted as Myrmarachne MacLeay, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Janus Stephens, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Cephidae (Family)
     Janus Stephens, 1829 accepted as Janus Stephens, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Cephidae (Family)

Janusia
     Janusia Gray, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Ctenidae (Family)
     Janusia A.H.L. Jussieu ex Endlicher, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)

Janzenia
     Janzenia Olmi, 2000 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Dryinidae (Family)
     Janzenia Marsh, 1993 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Japetus
     Japetus Distant, 1883 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Largidae (Family)
     Japetus Stål, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Fulgoridae (Family)
     Japetus Roewer, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Podoctidae (Family)
     Japetus Reitter, 1904 accepted as Trichosternum Wollaston, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Japonia
     Japonia F. von Höhnel, 1909 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideales (Order) > Dothioraceae (Family)
     Japonia Gould, 1859 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Cyclophoridae (Family)
 Japonia Weise, 1922 accepted as Japonitata Strand, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Japyx
     Japyx Haliday, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplura (Class) > (Order) > Japygidae (Family)
 Japyx Meinert, 1865 accepted as Japyx Haliday, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplura (Class) > (Order) > Japygidae (Family)

Jarava
     Jarava Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Jarava Godwin-Austen, 1882 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Jaspidia
     Jaspidia Boisduval, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Jaspidia Hübner, 1809-1813 accepted as Jaspidia Hübner, 1809-1813 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Jassidophaga
     Jassidophaga Enderlein, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pipunculidae (Family)
     Jassidophaga Aczél, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pipunculidae (Family)

Jasus
 Jasus Megerle, 1804 accepted as Iassus Fabricius, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Jasus Parker, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Palinuridae (Family)

Jaubertia
 Jaubertia Spach ex Jaubert & Spach, 1850 accepted as Dipterocome F.E.L. Fischer & C.A. Meyer, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Jaubertia Guillemin, 1841 accepted as Plocama W. Aiton, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Jaumea
     Jaumea Persoon, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jaumea Jaume & de la Torre, 1972 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Jaundea
     Jaundea Roewer, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Assamiidae (Family)
 Jaundea Gilg in Engler & Prantl, 1894 accepted as Rourea Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Connaraceae (Family)

Javanella
     Javanella Kingma, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cytheridae (Family)
     Javanella Lundblad, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hygrobatidae (Family)

Javanoxenia
     Javanoxenia Schmitz, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
 Javanoxenia Kemner, 1932 accepted as Javanoxenia Schmitz, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)

Jeannelia
     Jeannelia Raffray in Alluaud & Jeannel, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Jeannelia Dalenius, 1958 accepted as Africoribates Evans, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Mycobatidae (Family)

Jeannelinus
 Jeannelinus Jeanne, 1965 accepted as Pterostichus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Jeannelinus Schatzmayr, 1943 accepted as Pterostichus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Jeanneretia
     Jeanneretia Pfeiffer, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Cepolidae (Family)
     Jeanneretia Gaudichaud-Beaupré, 1841 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Pandanales (Order) > Pandanaceae (Family)

Jeannetia
     Jeannetia Mercier, 1937 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Stomechinidae (Family)
 Jeannetia Collignon, 1958 † accepted as Jeanneticeras Collignon, 1959 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ammonoidea (awaiting allocation) (Family)

Jeffersonia
     Jeffersonia Poulsen, 1927 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Bathyuridae (Family)
     Jeffersonia Barton, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Berberidaceae (Family)
 Jeffersonia Brickell, 1800 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Loganiaceae (Family)

Jeffreya
 Jeffreya A.L. Cabrera, 1978 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jeffreya H. Wild, 1974 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Jelinekia
     Jelinekia Cobos, 1980 accepted as Jelinekia Cobos, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Jelinekia Cobos, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Jelinekia Kirejtshuk, 1986 accepted as Jelinekiella Kirejtshuk, 2000 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Kateretidae (Family)

Jelskia
 Jelskia Bourguignat, 1877 accepted as Borysthenia Lindholm, 1914 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Valvatidae (Family)
     Jelskia Taczanowski, 1871 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Jenkinsella
     Jenkinsella E.M. Reid & M.E.J. Chandler, 1933 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Jenkinsella Kennett & Srinivasan, 1983 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
 Jenkinsella accepted as Jenkinsiella Jordan & Evermann, 1905 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Ophichthidae (Family)

Jenkinsia
 Jenkinsia Griffith, 1843 accepted as Miquelia C.F. Meisner, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)
     Jenkinsia Kieffer, 1913 accepted as Jenkinshelea Macfie, 1934 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ceratopogonidae (Family)
     Jenkinsia Jordan & Evermann, 1896 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Clupeidae (Family)
 Jenkinsia N. Wallich ex J.O. Voigt, 1845 accepted as Myriopteron Griffith, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Jenkinsia W.J. Hooker, 1841 accepted as Bolbitis Schott, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Dryopteridaceae (Family)

Jenkinsonia
 Jenkinsonia Sweet, 1821 accepted as Pelargonium L'Héritier ex W. Aiton, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Geraniaceae (Family)
     Jenkinsonia Robison, 1971 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Jenmania
 Jenmania Rolfe, 1898 accepted as Palmorchis Barbosa Rodrigues, 1877 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Jenmania W. Wächter, 1897 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)

Jennaria
     Jennaria Rieger, 1991 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Annelida (awaiting allocation) (Class) > Annelida (awaiting allocation) (Order) > Annelida (awaiting allocation) (Family)
 Jennaria Jousseaume, 1884 accepted as Jennaria Jousseaume, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)

Jensenia
     Jensenia Graff, 1882 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Rhabdocoela (Order) > Rhabdocoela incertae sedis (Family)
     Jensenia S.O. Lindberg, 1867 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Pallaviciniales (Order) > Pallaviciniaceae (Family)

Jensia
     Jensia B.G. Baldwin, 1999 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Jensia Boyko & Williams in Hiller, Williams & Boyko, 2015 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Akentrogonida (Order) > Thompsoniidae (Family)

Jerdonia
 Jerdonia Day, 1871 accepted as Lepidocephalichthys Bleeker, 1863 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cobitidae (Family)
     Jerdonia R. Wight, 1848 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Jerdonia Hume, 1870 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Jerdonia Blanford, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Jereopsis
     Jereopsis Pomel, 1872 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Jereopsiidae (Family)
 Jereopsis sensu Schmidt, 1879 accepted as Neosiphonia Sollas, 1888 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Phymatellidae (Family)

Jesonia
 Jesonia Gray, 1847 accepted as Cardita Bruguière, 1792 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Carditidae (Family)
     Jesonia Gray, 1840 accepted as Jesonia Gray, 1847 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Carditidae (Family)

Jessenia
 Jessenia G.K.W.H. Karsten, 1857 accepted as Oenocarpus C.F.P. Martius, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Jessenia Otto & Bardenheuer, 1996 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Dipnoi (Class) > (Order) > Dipnoi (awaiting allocation) (Family)

Jesupara
     Jesupara L. Glicenstein, 2018 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Jesupara L. Glicenstein, 2018, nom. inval. accepted as Jesupara L. Glicenstein, 2018 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Jianchangia
     Jianchangia Y. Yang, Y. Wang & D.K. Ferguson, 2020 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Gnetopsida (Class) > Gnetales (Order) > Ephedraceae (Family)
     Jianchangia Guo & An, 1982 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Jiangshanolites
     Jiangshanolites Lin & Zou, 1983 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)
     Jiangshanolites Lin & Zou, 1980 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Jilinella
     Jilinella Han, 1980 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Jilinella L.M. Yin, 1987 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
 Jilinella Yin, 1984 † accepted as Jilinella Yin, 1984 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Jilinga
     Jilinga Ghauri, 1974 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Jilinga Eitschberger, Danner & Surholt in Danner, Eitschberger & Surholt, 1998 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)

Jimenezia
     Jimenezia Vandel, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Philosciidae (Family)
     Jimenezia Bolivar, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Jimeneziella
     Jimeneziella Kury & Alonso-Zarazaga, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Kimulidae (Family)
     Jimeneziella Avram, 1970 accepted as Jimeneziella Kury & Alonso-Zarazaga, 2011 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Kimulidae (Family)

Jinxianella
 Jinxianella Liu & Yang in Hong, Huang, Yang, Lan, Xian, Yang & Liu, 1988, nom. nud. (?) † accepted as Jinxianella Liu & Yang in Hong et al., 1988 † · Animalia (Kingdom) > Vendobionta (Phylum) > (Class) > (Order) > Vendobionta (awaiting allocation) (Family)
     Jinxianella Liu & Yang in Hong et al., 1988 † · Animalia (Kingdom) > Vendobionta (Phylum) > (Class) > (Order) > Vendobionta (awaiting allocation) (Family)

Jiubaspis
     Jiubaspis Zhou & Yin, 1978 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Jiubaspis Zhou & Yin in Zhang, Lu, Zhu, Qian, Lin, Zhou, Zhang & Yuan, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Jiumenia
     Jiumenia Yuan in Zhang, Lu, Zhu, Qian, Lin, Zhou, Zhang & Yuan, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Jiumenia Liu & Dong, 2022 † accepted as Jiumenia Liu & Dong, 2022 † (junior homonym)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > Palaeopascichnida (Order) > (Family)

Jiuquania
     Jiuquania Hu, 2004 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Jiuquania Li in Zhou, Li & Qu, 1982 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Jixiania
     Jixiania Niu, 1987 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Scyphozoa (awaiting allocation) (Order) > Scyphozoa (awaiting allocation) (Family)
     Jixiania Zhang in Zhang, Xiang, Liu & Meng, 1995 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Trilobitomorpha (awaiting allocation) (Order) > Trilobitomorpha (awaiting allocation) (Family)
     Jixiania Yan, 1987 † · Plantae (Kingdom) > Algae incertae sedis (Phylum) > Vendophyceae (Class) > Vendotaeniales (Order) > Vendotaeniaceae (Family)

Jkella
     Jkella V.P. Shuysky, 1970 † (uncertain)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)
 Jkella † accepted as Ikella Tyazheva, 1972 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Athyridida (Order) > Athyrididae (Family)

Joannisia
     Joannisia Balinsky, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Joannisia Dall, 1895 † accepted as Joannisiella Dall, 1895 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Ungulinidae (Family)
     Joannisia Kieffer, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Joannisia Monterosato, 1884 accepted as Tylodina Rafinesque, 1814 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Umbraculida (Order) > Tylodinidae (Family)

Jocaste
     Jocaste Holthuis, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Palaemonidae (Family)
     Jocaste Kunth, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Joculator
     Joculator Hedley, 1909 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Cerithiopsidae (Family)
 Joculator Manza, 1937 accepted as Corallina Linnaeus, 1758 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Corallinaceae (Family)

Johansenia
 Johansenia P. Hašler, P. Dvořák & A. Poulíčková, 2014 accepted as Johanseninema P. Hašler, P. Dvořák & A. Poulíčková, 2014 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Microcoleaceae (Family)
     Johansenia K.R. Hind & G.W. Saunders, 2013 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Corallinaceae (Family)

Johanssonia
 Johanssonia Borkowski, 1972 accepted as Enteucha Meyrick, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nepticulidae (Family)
     Johanssonia Selensky, 1914 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Rhynchobdellida (Order) > Piscicolidae (Family)

Johnia
     Johnia Karavajev, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Johnia R. Wight & Arnott, 1834 accepted as Neonotonia J.A. Lackey, 1977 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Johnia Roxburgh, 1820 accepted as Salacia Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)

Johnsonella
     Johnsonella Moore & Moore, 1994 · Bacteria (Kingdom) > Firmicutes (Phylum) > Clostridia (Class) > Clostridiales (Order) > Lachnospiraceae (Family)
     Johnsonella Afshar, 1969 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)

Johnsonia
 Johnsonia K.B. Korde, 1965 † accepted as Kordea E.A. Molinari-Novoa & M.D. Guiry, 2021 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Johnsonia Coquillett, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Johnsonia R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asphodelaceae (Family)
 Johnsonia P. Miller, 1754 accepted as Johnsonia P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
 Johnsonia Adanson, 1763 accepted as Cedrela P. Browne, 1756 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Meliaceae (Family)

Johnsonomyia
     Johnsonomyia Felt, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Johnsonomyia Malloch, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Johnstonella
     Johnstonella Paschoal, 1983 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)
 Johnstonella A. Brand, 1925 accepted as Cryptantha Lehmann ex G. Don, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Johnstonella Paschoal in Paschoal & Johnston, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Gymnodamaeidae (Family)
 Johnstonella Gosse, 1853 accepted as Tomopteris Eschscholtz, 1825 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Tomopteridae (Family)

Johnstonia
     Johnstonia R.D. Tortosa, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rhamnaceae (Family)
 Johnstonia Fuhrmann, 1920 accepted as Fuhrmannetta Stiles & Orleman, 1926 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Davaineidae (Family)
     Johnstonia de Quatrefages, 1849 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Capitellida (Order) > Maldanidae (Family)
     Johnstonia Jay, 1850 accepted as Johnstonia Jay, 1850 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Johnstonia Basir, 1956 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Thelastomatidae (Family)
     Johnstonia A.B. Walkom, 1925 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridophyta/Pteridospermophyta (unclassified foliage) (Class) > Pteridophyta/Pteridospermophyta (awaiting allocation) (Order) > Pteridophytes/Pteridosperms (awaiting allocation) (Family)
 Johnstonia M.B. Ellis, 1971 accepted as Neojohnstonia B.C. Sutton, 1983 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Johowia
     Johowia Silva Figueroa, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
 Johowia Epling & Looser, 1937 accepted as Cuminia Colla, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Joinvillea
 Joinvillea Steindachner, 1908 accepted as Deuterodon Eigenmann in Eigenmann, McAtee & Ward, 1907 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
     Joinvillea Gaudichaud-Beaupré ex A.T. Brongniart & Gris, 1861 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Joinvilleaceae (Family)

Jolya
     Jolya B. Skvortzov & Noda, 1968 · Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > Jolyaceae (Family)
     Jolya Bourguignat, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Jonesia
     Jonesia Rocourt & Stackbrandt, 1987 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Micrococcales (Order) > Jonesiaceae (Family)
     Jonesia Brady, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Bythocytheridae (Family)
 Jonesia M. Bizot, R.B. Pierrot & T. Pocs, 1974 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Funariales (Order) > Funariaceae (Family)
 Jonesia Roxburgh, 1795 accepted as Saraca Linnaeus, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Jonesiella
 Jonesiella Rydberg, 1906 accepted as Astragalus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Jonesiella Brady, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Pseudotachidiidae (Family)
 Jonesiella Hafeezullah & Siddiqi, 1970 accepted as Antorchis Linton, 1911 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Faustulidae (Family)

Jonesius
 Jonesius Yamaguti, 1959 accepted as Diorchis Clerc, 1903 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Hymenolepididae (Family)
 Jonesius Sankarankutty, 1962 accepted as Cherusius Low & Ng, 2012 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Domeciidae (Family)

Jongmansia
     Jongmansia C. Reid & E.M. Reid, 1915 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)
     Jongmansia Laurentiaux, 1949 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Palaeodictyoptera (Order) > Palaeodictyoptera (awaiting allocation) (Family)

Jonorchis
     Jonorchis G. Beck von Mannagetta, 1890 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Jonorchis J.M.H. Shaw, 2014 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Joppidium
     Joppidium Walsh, 1873 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Joppidium Cresson, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Jordania
 Jordania Hamam & Haynes, 1977 † accepted as Elhasaella Hamam, 1976 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Lacosteinidae (Family)
 Jordania Schenk, 1880 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliopsida (awaiting allocation) (Order) > (Family)
     Jordania Göppert & Fiedler in Fiedler, 1857 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Jordania Starks, 1895 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Cottidae (Family)
     Jordania Boissier & Heldreich in Boissier, 1849 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Jordania Sekera, 1912 accepted as · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Rhabdocoela (Order) > Koinocystididae (Family)

Jordanita
 Jordanita Agenjo, 1940 accepted as Procris Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
 Jordanita Verity, 1946 accepted as Procris Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)

Jordanites
     Jordanites Bless, 1967 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Palaeocopida (Order) > Palaeocopida (awaiting allocation) (Family)
 Jordanites Fowler, 1925 accepted as Eurypharynx Vaillant, 1882 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Saccopharyngiformes (Order) > Eurypharyngidae (Family)

Jorgensenia
     Jorgensenia Kieffer, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Jorgensenia Schaus, 1924 accepted as Geriojennsa Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Jörgensenia
 Jörgensenia Kieffer, 1913 accepted as Jorgensenia Kieffer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Jörgensenia Schaus, 1924 accepted as Geriojennsa Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Josefia
     Josefia Toledano, 2000 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Josefia D. Scherberich, K. Hase & P.C. Boyce in Scherberich et al., 2023 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)

Josepha
     Josepha Vellozo, 1829 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Nyctaginaceae (Family)
     Josepha Tenison-Woods, 1879 accepted as Josepha Tenison-Woods, 1879 (taxon inquirendum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Josephella
     Josephella Caullery & Mesnil, 1896 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Serpulidae (Family)
     Josephella Ben-Eliahu & Payiatas, 1999 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Serpulidae (Family)

Josephia
 Josephia R. Wight, 1851 accepted as Sirhookera O. Kuntze, 1891 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Josephia R. Brown ex J. Knight, 1809 accepted as Banksia Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)

Joubertia
 Joubertia Oudemans, 1905 accepted as Monojoubertia Radford, 1950 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Proctophyllodidae (Family)
     Joubertia Bourguignat, 1888 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Joubinia
     Joubinia Bürger, 1904 · Animalia (Kingdom) > Nemertea (Phylum) > Pilidiophora (Class) > Heteronemertea (Order) > Valenciniidae (Family)
 Joubinia Robson, 1929 accepted as Robsonella Adam, 1938 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Octopodidae (Family)

Jousseaumea
 Jousseaumea Coutière, 1897 accepted as Salmoneus Holthuis, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Alpheidae (Family)
 Jousseaumea Schilder, 1927 accepted as Jousseaumea Schilder, 1927 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)

Jousseaumia
 Jousseaumia Sacco, 1894 accepted as Jousseaumia Sacco, 1894 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)
 Jousseaumia Bourne in Herdman, 1906 accepted as Jousseaumiella Bourne, 1907 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)

Jovellania
     Jovellania Bayle, 1878 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Oncocerida (Order) > Oncocerida (awaiting allocation) (Family)
     Jovellania Barrois, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Joyeuxia
 Joyeuxia López-Neyra, 1927 accepted as Joyeuxiella Fuhrmann, 1935 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dipylidiidae (Family)
 Joyeuxia Topsent, 1890 accepted as Inflatella Schmidt, 1875 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Coelosphaeridae (Family)

Juania
     Juania Drude, 1878 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Juania Aurivillius, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Jubula
     Jubula Bates, 1929 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)
     Jubula Dumortier, 1822 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Porellales (Order) > Jubulaceae (Family)

Judomia
     Judomia Lermontova, 1951 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Redlichiida (Order) > Judomiidae (Family)
     Judomia Lermontova in Dzevanovsky, 1943 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Juergensia
     Juergensia K.P.J. Sprengel, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Violaceae (Family)
 Juergensia Reichenbach, 1841 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Hapalidiales (Order) > Hapalidiaceae (Family)

Juglandiphyllum
     Juglandiphyllum A.G. Nathorst, 1888 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliopsida (awaiting allocation) (Order) > (Family)
 Juglandiphyllum W.M. Fontaine, 1889 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Juglandaceae (Family)
 Juglandiphyllum Koch, 1963 † accepted as Juglandiphyllum Koch, 1963 † · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Juglandoxylon
 Juglandoxylon E. Hofmann, 1952 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Juglandaceae (Family)
     Juglandoxylon G. Kraus, 1886 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Juglandaceae (Family)

Jugurthia
     Jugurthia Oberthür in Culot, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Jugurthia Dalla Torre, 1894 accepted as Jugurtia Saussure, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)

Julia
     Julia Gould, 1862 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sacoglossa (Order) > Juliidae (Family)
     Julia de Folin, 1881 accepted as Julia de Folin, 1881 (nomen nudum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Juliania
 Juliania Fucini, 1895 † accepted as Pustulifer Cossmann, 1895 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Juliania Morra & del Rio, 1987 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Juliania Roman, 1910 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Juliania La Llave in La Llave & Lexarza, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Juliania D.F.L. Schlechtendal, 1844 accepted as Amphipterygium C.J.W. Schiede ex Standley, 1923 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)

Julinea
 Julinea Sánchez, 1955 accepted as Cephalobellus Cobb, 1920 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Thelastomatidae (Family)
 Julinea Sluiter, 1906 accepted as Julinea Sluiter, 1906 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Enterogona (Order) > Holozoidae (Family)

Julis
     Julis Gouan, 1770 accepted as Coris Lacepède, 1801 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)
 Julis Cuvier, 1814 accepted as Coris Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)

Julius
 Julius Risso, 1826 accepted as Julus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)
 Julius Lafont, 1871 accepted as Coris Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)

Julodimorpha
     Julodimorpha Gemminger & Harold, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Julodimorpha Saunders, 1871 accepted as Julodimorpha Saunders, 1871 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Julodimorpha Thomson, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Julodis
     Julodis Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Julodis Solier, 1833 accepted as Julodis Solier, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Julus
 Julus Swainson, 1839 accepted as Coris Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)
     Julus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)

Juncaria
     Juncaria Walker, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Juncaria Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Juncella
     Juncella F. von Mueller ex Hieronymus in Engler & Prantl, 1887 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Restionaceae (Family)
     Juncella Milne-Edwards, 1857 accepted as Junceella Valenciennes, 1855 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Ellisellidae (Family)

Juncilerus
     Juncilerus Zhelochovtsev in Zhelokhovtsev, Tobias & Kozlov, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Juncilerus Zhelochovtsev in Skarlato, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Juncinella
 Juncinella J.P. Fourreau, 1869 accepted as Juncinella J.P. Fourreau, 1869 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Juncaceae (Family)
     Juncinella (V.I. Kreczetowicz & N.F. Gontscharow) L. Záveská Drábková & J. Proćków in Brožová et al., 2022 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Juncaceae (Family)

Jundzillia
 Jundzillia Raciborski ex L.F. Celakovsky, 1893 accepted as Amaurochaete Rostafinski, 1873 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Stemonitidales (Order) > Amaurochaetaceae (Family)
 Jundzillia Raciborski, 1887 accepted as Amaurochaete Rostafinski, 1873 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Stemonitidales (Order) > Amaurochaetaceae (Family)

Junggarochondria
     Junggarochondria Yang, 1983 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Junggarochondria Yang & Chen, 1985 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)

Junghuhnia
     Junghuhnia Corda, 1842 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Meruliaceae (Family)
 Junghuhnia Miquel, 1859 accepted as Codiaeum A.H.L. Jussieu, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
     Junghuhnia Martin, 1931 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)

Jungia
 Jungia Heister ex Fabricius, 1759 accepted as Salvia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Jungia Boehmer in Ludwig, 1760 accepted as Justicia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
     Jungia Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Jungia J. Gaertner, 1788 accepted as Baeckea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
     Jungia Oye, 1949 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Jungia Loeblich & Tappan, 1961 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Tubulinea (Class) > Arcellinida (Order) > Nebelidae (Family)

Jungiella
     Jungiella Vaillant, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
     Jungiella Vaillant, 1971 accepted as Jungiella Vaillant, 1972 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)

Junia
 Junia Dumortier, 1822 accepted as Phallus Junius ex Linnaeus, 1753 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Phallales (Order) > Phallaceae (Family)
     Junia Stål, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Junia Rafinesque, 1840 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)
     Junia Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Clethraceae (Family)

Juniperia
     Juniperia Linnavuori, 1965 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Juniperia O'Brien, 1971 † accepted as Juniperthia O'Brien, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Achilidae (Family)

Juno
     Juno Mazyck, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Juno Trattinick, 1821 accepted as Iris Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Junodia
     Junodia Pax in Engler, 1899 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
     Junodia Schulthess-Rechberg, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Hymenopodidae (Family)

Junonia
 Junonia Seguenza, 1877 accepted as Ledella Verrill & Bush, 1897 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Nuculanida (Order) > Nuculanidae (Family)
     Junonia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Jupiterella
     Jupiterella Copeland, 1974 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Jupiterella Li & Copper, 2006 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Orthida incertae sedis (Family)

Jupiteria
 Jupiteria Scudder, 1883 † accepted as Jupitellia Carpenter, 1985 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Jupiteria Bellardi, 1875 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Nuculanida (Order) > Nuculanidae (Family)

Juragomphus
     Juragomphus Nel, Bechly, Martinez-Delclos & Fleck, 2001 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Juragomphus Nel, Bechly, Martinz-Delclos & Fleck, 2001 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Juragomphidae (Family)

Jurella
     Jurella Danich, 1977 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Involutinida (Order) > Involutinidae (Family)
     Jurella N.P. Kyansep-Romashkina in G.G. Martinson & N.P. Kyansep-Romashkina, 1974 † (uncertain)· Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Charales (Order) > Raskyellaceae (Family)

Jurinea
 Jurinea Thomson, 1868 accepted as Jurinia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Jurinea Cassini, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Jurinella
     Jurinella Brauer & Bergenstamm, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Jurinella Jaubert & Spach, 1846 accepted as Jurinea Cassini, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Jurinia
     Jurinia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Jurinia Costa, 1839 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
 Jurinia Claus, 1866 accepted as Lourinia Wilson, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Louriniidae (Family)

Juxtarctia
     Juxtarctia Singh & Singh, 1998 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Juxtarctia Kirti & Kaleka, 2002 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
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