Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Class Aplacophora
- Class Bivalvia
- Class Calyptoptomatida †
- Class Camerothecida
- Class Cephalopoda
- Class Cricoconarida †
- Class Gastropoda
- Subclass Neritimorpha
- Subclass Neritimorpha incertae sedis
- Subclass Vetigastropoda
- Subclass Vetigastropoda incertae sedis
- Order Acochlidiacea
- Order Acochlidioidea
- Order Allogastropoda †
- Order Anaspidea
- Order Archaeogastropoda
- Order Archaeopulmonata
- Order Architaenioglossa
- Order Architaenoglossa accepted as Architaenioglossa
- Order Basommatophora
- Order Basommatophora incertae sedis
- Order Bellerophontida †
- Order Caenogastropoda (awaiting allocation)
- Order Caenogastropoda incertae sedis
- Order Cephalaspidea
- Order Cocculiniformia
- Order Coenogastropoda incertae sedis
- Order Cylindrobullida
- Order Cyrtoneritimorpha †
- Order Docoglossa
- Order Ellobiida
- Order Eogastropoda
- Order Euomphalina †
- Order Eupulmonata incertae sedis
- Order Gastropoda (awaiting allocation)
- Order Gastropoda incertae sedis
- Order Gymnosomata
- Order Helicinoidea †
- Order Heterobranchia incertae sedis
- Order Heterostropha
- Order Heterostrophia accepted as Heterostropha
- Order Hygrophila
- Order Hypsogastropoda incertae sedis
- Order Littorinimorpha
- Family Adeorbidae Monterosato, 1884 accepted as Tornidae Sacco, 1896
- Family Amnicolidae Tryon, 1863
- Family Amphiperatidae Gray, 1853 accepted as Ovulidae Fleming, 1822
- Family Anabathridae Keen, 1971
- Family Anabathronidae accepted as Anabathridae Keen, 1971
- Family Annulariidae Henderson & Bartsch, 1920
- Family Ansolidae Slavoshevskaya, 1975 accepted as Barleeiidae Gray, 1857
- Family Aporrhaidae Gray, 1850
- Family Aporrhaididae accepted as Aporrhaidae Gray, 1850
- Family Aporrhaiidae accepted as Aporrhaidae Gray, 1850
- Family Assimineidae H. Adams & A. Adams, 1856
- Family Atlantidae Rang, 1829
- Family Baicaliidae P. Fischer, 1885 accepted as Amnicolidae Tryon, 1863
- Family Barleeidae Gray, 1857 accepted as Barleeiidae Gray, 1857
- Family Barleeiidae Gray, 1857
- Family Bellerophinidae †
- Family Bembiciidae Finlay, 1928 accepted as Littorinidae Gray, 1840
- Family Benedictiidae Clessin, 1880 accepted as Lithoglyphidae Tryon, 1866
- Family Bithyniidae Gray, 1857
- Family Bohaispiridae †
- Family Bursidae Thiele, 1925
- Family Bythinellidae Locard, 1893
- Family Caecidae Gray, 1850
- Family Caledoniellidae Rosewater, 1969 accepted as Vanikoridae Gray, 1840
- Family Calopiidae Ponder, 1999
- Family Calyptraeidae Lamarck, 1809
- Family Capulidae Fleming, 1822
- Family Carinariidae Blainville, 1818
- Family Cassidae Latreille, 1825
- Family Cheileidae Macpherson & Chapple, 1951 accepted as Hipponicidae Troschel, 1861
- Family Chondropomatidae Henderson & Bartsch, 1920 accepted as Annulariidae Henderson & Bartsch, 1920
- Family Choristeidae Verrill, 1882 accepted as Naticidae Gray, 1840
- Family Choristidae Verrill, 1882 accepted as Naticidae Gray, 1840
- Family Cingulopsidae Fretter, 1958
- Family Clenchiellidae D. W. Taylor, 1966
- Family Cochliopidae Tryon, 1866
- Family Colombellinidae Fischer, 1884 †
- Family Coriandriidae F. Nordsieck, 1972 accepted as Cingulopsidae Fretter, 1958
- Family Coxiellidae Iredale, 1943 accepted as Pomatiopsidae Stimpson, 1865
- Family Crepidulidae Fleming, 1822 † accepted as Calyptraeidae Lamarck, 1809
- Family Ctiloceratidae Iredale & Laseron, 1957 accepted as Caecidae Gray, 1850
- Family Cyclostomatidae Menke, 1828 accepted as Pomatiidae Newton, 1891
- Family Cymatiidae Iredale, 1913
- Family Cypraeidae Rafinesque, 1815
- Genus Adusta Jousseaume, 1884 accepted as Erronea Troschel, 1863
- Genus Afrozoila Fehse, 2016
- Genus Akleistostoma Gardner, 1948 †
- Genus Annepona Iredale, 1935
- Genus Arabica Jousseaume, 1884 accepted as Mauritia Troschel, 1863
- Genus Arestoides accepted as Arestorides Iredale, 1930
- Genus Arestorides Iredale, 1930
- Genus Aricia Gray, 1832 accepted as Monetaria Troschel, 1863
- Genus Aricia Gray, 1837 accepted as Monetaria Troschel, 1863
- Genus Austrasiatica Lorenz, 1989 †
- Genus Austrocypraea Cossmann, 1903
- Genus Barycypraea Schilder, 1927
- Genus Basilitrona Iredale, 1930 accepted as Luria Jousseaume, 1884
- Genus Bernaya Jousseaume, 1884 †
- Genus Bernayia Harris, 1897 accepted as Bernaya Jousseaume, 1884 †
- Genus Bistolida Cossmann, 1920
- Genus Blasicrura Iredale, 1930
- Genus Bouchetaria Castelin & Lorenz, 2024
- Genus Brugnonia Jeffreys, 1883 accepted as Erosaria Troschel, 1863
- Genus Callistocypraea Schilder, 1927 accepted as Lyncina Troschel, 1863
- Genus Calusacypraea Petuch, 1996 † accepted as Siphocypraea Heilprin, 1886 †
- Genus Ceypraea Schepman, 1907 † accepted as Cypraea Linnaeus, 1758
- Genus Chelycypraea Schilder, 1927
- Genus Contradusta Meyer, 2003
- Genus Cpryaea Schreibers, 1793 † accepted as Cypraea Linnaeus, 1758
- Genus Cribraria Jousseaume, 1884 accepted as Cribrarula Strand, 1929
- Genus Cribrarula Strand, 1929
- Genus Crossia Shikama, 1974 accepted as Cypraeovula Gray, 1824
- Genus Cryptocypraea Meyer, 2003
- Genus Cupinota Iredale, 1939 accepted as Erosaria Troschel, 1863
- Genus Cypaea Hedley, 1899 † accepted as Cypraea Linnaeus, 1758
- Genus Cypraea Linnaeus, 1758
- Genus Cypraeadia Sowerby, 1842
- Genus Cypraedia Swainson, 1840 †
- Genus Cypraeoides Agassiz, 1846
- Genus Cypraeorbis Conrad, 1865 †
- Genus Cypraeova Swainson, 1840 accepted as Cypraeovula Gray, 1824
- Genus Cypraeovula Gray, 1824
- Genus Cypraeovulum Swainson, 1840 accepted as Cypraeovula Gray, 1824
- Genus Cypraeovum Schaufuss, 1869 accepted as Cypraeovula Gray, 1824
- Genus Cyprea Costa, 1776 † accepted as Cypraea Linnaeus, 1758
- Genus Cypreae Ostergaard, 1935 † accepted as Cypraea Linnaeus, 1758
- Genus Cyproca Baudon, 1853 † accepted as Cypraea Linnaeus, 1758
- Genus Cyproea Bruguière, 1792 † accepted as Cypraea Linnaeus, 1758
- Genus Cyproea de Serres, 1822 † accepted as Cypraea Linnaeus, 1758
- Genus Cyprovula Gray, 1840 accepted as Cypraeovula Gray, 1824
- Genus Dentitriangularum Chaix, 2022 †
- Genus Eclogavena Iredale, 1930
- Genus Eopustularia Fehse, 2010 †
- Genus Epona H. Adams & A. Adams, 1854 accepted as Pustularia Swainson, 1840
- Genus Erosaria Troschel, 1863
- Genus Erronea Troschel, 1863
- Genus Erythraea Mörch, 1877 accepted as Macrocypraea Schilder, 1930
- Genus Europaea Sowerby, 1854 † accepted as Cypraea Linnaeus, 1758
- Genus Evenaria Iredale, 1930 accepted as Palmadusta Iredale, 1930
- Genus Ficadusta Habe & Kosuge, 1966
- Genus Floradusta Petuch, 2003 † accepted as Palmadusta Iredale, 1930
- Genus Garviea Dolin & Dockery, 2018 †
- Genus Gigantocypraea Schilder, 1927 †
- Genus Gisortia Jousseaume, 1884 †
- Genus Globulina Cerulli-Irelli, 1911 † accepted as Schilderia Tomlin, 1930
- Genus Gratiadusta Iredale, 1930 accepted as Erronea Troschel, 1863
- Genus Guttacypraea Iredale, 1935 accepted as Notocypraea Schilder, 1927
- Genus Hiraseadusta Shikama, 1971 †
- Genus Ipisa Dollfus, 1904
- Genus Ipsa Jousseaume, 1884 †
- Genus Jennaria Jousseaume, 1884
- Genus Jousseaumea Schilder, 1927
- Genus Jousseaumia Sacco, 1894
- Genus Kurodadusta Shikama, 1971 accepted as Nesiocypraea Azuma & Kurohara, 1967
- Genus Leporicypraea Iredale, 1930
- Genus Lorenzicypraea Petuch & Drolshagen, 2011 accepted as Macrocypraea Schilder, 1930
- Genus Loxacypraea Petuch, 2004 †
- Genus Luperia Oppenheim, 1901 †
- Genus Luponaria Weinkauff, 1881 †
- Genus Luponia Gray, 1837 † accepted as Cypraeovula Gray, 1824
- Genus Luponica Weinkauff, 1881 †
- Genus Luria Jousseaume, 1884
- Genus Lyncina Troschel, 1863
- Genus Macrocypraea Schilder, 1930
- Genus Marginocypraea Ingram, 1947 †
- Genus Maurina Jousseaume, 1884 accepted as Mauritia Troschel, 1863
- Genus Mauritia Troschel, 1863
- Genus Mauxiena Jousseaume, 1884
- Genus Melicerona Iredale, 1930
- Genus Mercatoria Melvill, 1888 accepted as Monetaria Troschel, 1863
- Genus Monetaria Troschel, 1863
- Genus Muracypraea Woodring, 1957
- Genus Myakkacypraea Petuch, 2003 † accepted as Siphocypraea Heilprin, 1886 †
- Genus Mystaponda Iredale, 1930 accepted as Lyncina Troschel, 1863
- Genus Naria Broderip, 1837
- Genus Neobernaya Schilder, 1927
- Genus Nesiocypraea Azuma & Kurohara, 1967
- Genus Nivigena Iredale, 1930 accepted as Cribrarula Strand, 1929
- Genus Notadusta Schilder, 1935
- Genus Notocypraea Schilder, 1927
- Genus Notoluponia Schilder, 1935 †
- Genus Nuclearia Jousseaume, 1884 accepted as Nucleolaria Oyama, 1959
- Genus Nucleolaria Oyama, 1959
- Genus Ocellaria Weinkauff, 1881 accepted as Erosaria Troschel, 1863
- Genus Okeechobea Petuch, 2003 † accepted as Siphocypraea Heilprin, 1886 †
- Genus Opponaria Iredale, 1939 accepted as Purpuradusta Schilder, 1939
- Genus Ornamentaria Schilder & Schilder, 1936 accepted as Monetaria Troschel, 1863
- Genus Ovatipsa Iredale, 1931
- Genus Pahayokea Petuch, 2003 † accepted as Siphocypraea Heilprin, 1886 †
- Genus Palaeocypraea Schilder, 1928 †
- Genus Palangerosa Iredale, 1930 accepted as Erronea Troschel, 1863
- Genus Palmadusta Iredale, 1930
- Genus Palmulacypraea Meyer, 2003
- Genus Pantherinaria Sacco, 1894 accepted as Cypraea Linnaeus, 1758
- Genus Paulonaria Iredale, 1930 accepted as Erosaria Troschel, 1863
- Genus Peribolus Blainville, 1824 accepted as Trona Jousseaume, 1884
- Genus Perisserosa Iredale, 1930
- Genus Plaziatia Dolin & Lozouet, 2004 †
- Genus Ponda Jousseaume, 1884 accepted as Lyncina Troschel, 1863
- Genus Ponticypraea Fehse, Lorenz, Hawke & Kovacs, 2019 †
- Genus Praerosaria Dolin & Lozouet, 2004 †
- Genus Proadusta Sacco, 1894 †
- Genus Projenneria Dolin, 1997
- Genus Propustularia Schilder, 1927
- Genus Protoponda Dolin & Pacaud, 2009 †
- Genus Pseudadusta Petuch, 2003 † accepted as Siphocypraea Heilprin, 1886 †
- Genus Pseudozonaria Schilder, 1929
- Genus Purpuradusta Schilder, 1939
- Genus Purpurdusta
- Genus Pustularia Swainson, 1840
- Genus Pustullaria Paetel, 1875 † accepted as Pustularia Swainson, 1840
- Genus Pusutlaria Vredenburg, 1920 † accepted as Pustularia Swainson, 1840
- Genus Ransonia Dolin & Lozouet, 2004 † accepted as Ransoniella Dolin & Lozouet, 2005
- Genus Ransoniella Dolin & Lozouet, 2005 accepted as Notadusta Schilder, 1935
- Genus Ravitrona Iredale, 1930 accepted as Monetaria Troschel, 1863
- Genus Rhynchocypraea Cossmann, 1898 †
- Genus Schilderia Tomlin, 1930
- Genus Schilderina Dolin & Aguerre, 2020 †
- Genus Sinusigera d'Orbigny, 1853
- Genus Siphocypraea Heilprin, 1886 †
- Genus Staphylaea Jousseaume, 1884
- Genus Stolida Jousseaume, 1884 accepted as Bistolida Cossmann, 1920
- Genus Talostolida Iredale, 1931
- Genus Talparia Troschel, 1863
- Genus Tesselata Jousseaume, 1884
- Genus Tessellata Jousseaume, 1884
- Genus Thelxinovum Iredale, 1931 accepted as Notocypraea Schilder, 1927
- Genus Trona Jousseaume, 1884
- Genus Ultimus Montfort, 1810
- Genus Umbilia Jousseaume, 1884
- Genus Vulgusella Jousseaume, 1884 accepted as Cypraea Linnaeus, 1758
- Genus Zoila Jousseaume, 1884
- Species Zoila consobrina (McCoy, 1877)
- Species Zoila decipiens (E.A. Smith, 1880)
- Species Zoila delicatura Chandler & DuRoss, 1997 accepted as Zoila eludens L. Raybaudi, 1991
- Species Zoila eludens L. Raybaudi, 1991
- Species Zoila episema Iredale, 1939 accepted as Zoila venusta (G.B. Sowerby, 1847)
- Species Zoila friendii (J.E. Gray, 1831)
- Species Zoila gigas (McCoy, 1867)
- Species Zoila jeaniana (Cate, 1968)
- Species Zoila ketyana (L. Raybaudi, 1978)
- Species Zoila keytana
- Species Zoila marginata (Gaskoin, 1849)
- Species Zoila mariellae L. Raybaudi, 1983
- Species Zoila mulderi (Tate, 1892)
- Species Zoila orientalis L. Raybaudi, 1985
- Species Zoila perlae Lopez & Chiang, 1975
- Species Zoila platypyga (McCoy, 1876)
- Species Zoila raywalkeri Lorenz, 2011
- Species Zoila rosselli Cotton, 1948
- Species Zoila thersites (Gaskoin, 1849)
- Species Zoila venusta (G.B. Sowerby, 1847)
- Genus Zonaria Jousseaume, 1884
- Family Delavayidae Annandale, 1924 accepted as Pomatiopsidae Stimpson, 1865
- Family Doliidae Latreille, 1825 accepted as Tonnidae Suter, 1913
- Family Eatoniellidae Ponder, 1965
- Family Elachisinidae Ponder, 1985
- Family Emblandidae Ponder, 1985
- Family Emmericiidae Brusina, 1870
- Family Eocypraeidae Schilder, 1924
- Family Epigridae Ponder, 1985
- Family Eratoidae Gill, 1871
- Family Ericiidae Wenz, 1915 accepted as Pomatiidae Newton, 1891
- Family Falsicingulidae Slavosheveskaya, 1976
- Family Faxiidae Ravn, 1933 † accepted as Pickworthiidae Iredale, 1917
- Family Ficidae Meek, 1864
- Family Ficulidae Carpenter, 1857 accepted as Ficidae Meek, 1864
- Family Firolidae Rafinesque, 1815 accepted as Pterotracheidae Oken, 1815
- Family Haloceratidae Warén & P, 1991
- Family Helicostoidae Pruvot-Fol, 1937
- Family Hipponicidae Troschel, 1861
- Family Hydrobiidae Troschel, 1857
- Family Hydrococcidae Thiele, 1928
- Family Iravadiidae Thiele, 1928
- Family Lacunidae Gray, 1857 accepted as Littorinidae Gray, 1840
- Family Lamellariidae d'Orbigny, 1841 accepted as Velutinidae Gray, 1840
- Family Lamelliphoridae Korobkov, 1955 †
- Family Laubierinidae Warén, 1990
- Family Lepyriidae Pisbry & Olsson, 1951 accepted as Lithoglyphidae Tryon, 1866
- Family Lippistidae Iredale, 1924 accepted as Capulidae Fleming, 1822
- Family Lironobidae Ponder, 1967
- Family Lithoglyphidae Tryon, 1866
- Family Littorinidae Gray, 1840
- Family Littorinimorpha incertae sedis
- Family Lucmeriidae Gruendel, 2005 †
- Family Lyocyclidae Thiele, 1925
- Family Maturifusidae Gründel, 2001 † accepted as Pseudotritoniidae Golikov & Starobogatov, 1987 †
- Family Melarhaphidae Starobogatov & Sitnikova, 1983 accepted as Littorinidae Gray, 1840
- Family Merriidae Hedley, 1918 accepted as Vanikoridae Gray, 1840
- Family Mesocochliopidae †
- Family Micromelaniidae B. Dybowski & Grochmalicki, 1914 accepted as Hydrobiidae Troschel, 1857
- Family Moitessieriidae Bourguignat, 1863
- Family Naricidae Récluz, 1845 accepted as Vanikoridae Gray, 1840
- Family Naticidae Gray, 1840
- Family Omalaxidae Wenz, 1939 †
- Family Ovulidae Fleming, 1822
- Family Palaeorissoinidae †
- Family Paludestrinidae Newton, 1891 accepted as Hydrobiidae Troschel, 1857
- Family Pediculariidae J.E. Gray, 1853
- Family Pelycidiidae Ponder & Hall, 1983
- Family Personidae Gray, 1854
- Family Pickworthiidae Iredale, 1917
- Family Pisanianuridae Warén, 1990
- Family Pomatiasidae Gray, 1852 accepted as Pomatiidae Newton, 1891
- Family Pomatiidae Newton, 1891
- Family Pomatiopsidae Stimpson, 1865
- Family Pseudosacculidae Kuroda, 1933 accepted as Velutinidae Gray, 1840
- Family Pseudotritoniidae Golikov & Starobogatov, 1987 †
- Family Pterosomatidae Rang, 1829 accepted as Carinariidae Blainville, 1818
- Family Pterotracheidae Oken, 1815
- Family Pugnellidae Kiel & Bandel, 1999 † accepted as Aporrhaidae Gray, 1850
- Family Purpurinidae Zittel, 1895 †
- Family Pyrgulidae Brusina, 1882 accepted as Hydrobiidae Troschel, 1857
- Family Pyrulidae Swainson, 1840 accepted as Ficidae Meek, 1864
- Family Ranellidae Gray, 1854
- Family Rastodentidae Ponder, 1966
- Family Realiidae L. Pfieffer, 1853 accepted as Assimineidae H. Adams & A. Adams, 1856
- Family Reynellonidae Iredale, 1917 accepted as Pickworthiidae Iredale, 1917
- Family Rimellidae Stewart, 1927
- Family Risellidae Kesteven, 1903 accepted as Littorinidae Gray, 1840
- Family Rissoidae Gray, 1847
- Family Rissoidea (awaiting allocation)
- Family Rissoinidae Stimpson, 1865
- Family Rostellariidae Gabb, 1868
- Family Sacculidae Thiele, 1929 accepted as Velutinidae Gray, 1840
- Family Sakarahellidae Bandel, 2006
- Family Seraphidae Gray, 1853 accepted as Seraphsidae Gray, 1853
- Family Seraphsidae Gray, 1853
- Family Skeneopsidae Iredale, 1915
- Family Stenothyridae Fischer, 1885
- Family Strombidae Rafinesque, 1815
- Family Stromboidea incertae sedis
- Family Struthiolariidae Fischer, 1887
- Family Sycotypidae Gray, 1853 accepted as Ficidae Meek, 1864
- Family Tateidae Thiele, 1925
- Family Terebellidae H. Adams & A. Adams, 1854 accepted as Seraphsidae Gray, 1853
- Family Thalassocyonidae F. Riedel, 1995 accepted as Ficidae Meek, 1864
- Family Thersiteidae Savornin, 1914 †
- Family Tibiidae Golikov & Starobogatov, 1975 accepted as Rostellariidae Gabb, 1868
- Family Tonnidae Suter, 1913
- Family Tornidae Sacco, 1896
- Family Trichotropidae Gray, 1850 accepted as Capulidae Fleming, 1822
- Family Tripartellidae †
- Family Triviidae Troschel, 1863
- Family Truncatellidae Gray, 1840
- Family Truncatelloidea (awaiting allocation)
- Family Tylostomatidae Stoliczka, 1868 †
- Family Vanikoridae Gray, 1840
- Family Velutinidae Gray, 1840
- Family Vermetidae Rafinesque, 1815
- Family Vitrinellidae Bush, 1897
- Family Xenophoridae Troschel, 1852
- Family Zebinidae Coan, 1964
- Family Zerotulidae Warén & Hain, 1996
- Genus Olequahia Stewart, 1927 †
- Order Macluritina †
- Order Mesogastropoda
- Order Mimospirida †
- Order Murchisoniina †
- Order Muricoidea
- Order Neogastropoda
- Order Neomphalina incertae sedis
- Order Neotaenioglossa
- Order Neritoina †
- Order Notaspidea
- Order Nudibranchia
- Order Opisthobranchia (awaiting allocation)
- Order Orthogastropoda (awaiting allocation) †
- Order Paragastropoda †
- Order Patellogastropoda
- Order Patellogastropoda incertae sedis
- Order Pleurobranchacea
- Order Pleurobranchomorpha
- Order Prosobranchia (awaiting allocation)
- Order Ptenoglossa
- Order Pulmonata (awaiting allocation)
- Order Pulmonata incertae sedis
- Order Runcinoidea
- Order Sacoglossa
- Order Sorbeoconcha
- Order Stenoglossa
- Order Stylommatophora
- Order Systellommatophora
- Order Thecosomata
- Order Tonnoidea
- Order Umbraculida
- Order Umbraculomorpha
- Class Helcionelloida †
- Class Mollusca (awaiting allocation)
- Class Mollusca incertae sedis
- Class Monoplacophora
- Class Paragastropoda †
- Class Polyplacophora
- Class Rostroconchia †
- Class Scaphopoda
- Class Stenothecoida †
- Class Tentaculita †
- Family Maikhanellidae Missarzhevsky, 1989 †
- Genus Lingulocaris Salter, 1866 †
- Genus Modiolocaris Peach in Jehu & Campbell, 1917 † accepted as Lingulocaris Salter, 1866 †
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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