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
- Order Lepetellida
- Order Trochida
- Family Angariidae J.E. Gray, 1857
- Family Anomphalidae Wenz, 1938 †
- Family Araeonematidae Nützel, 2012 †
- Family Areneidae McLean, 2012
- Family Brookulidae Iredale & McMichael, 1962 accepted as Liotiidae Gray, 1850
- Family Calliostomatidae Thiele, 1924 (1847)
- Family Colloniidae Cossmann, 1915
- Family Conradiidae Golikov & Starobogatov, 1987
- Family Crosseolidae Hickman, 2013 accepted as Conradiidae Golikov & Starobogatov, 1987
- Family Crossostomatidae Cox, 1960 † accepted as Turbinidae Rafinesque, 1815
- Family Cyclostrematidae P. Fischer, 1885 accepted as Liotiidae Gray, 1850
- Family Elasmonematidae Knight, 1956 †
- Family Epulotrochidae Gründel, Keupp & Lang, 2017 †
- Family Eucochlidae Bandel, 2002 †
- Family Gazidae Hickman & McLean, 1990 accepted as Margaritidae Thiele, 1924
- Family Liotiidae Gray, 1850
- Family Margaritidae Thiele, 1924
- Family Metriomphalidae Gründel, Keupp & Lang, 2017 †
- Family Microdomatidae Wenz, 1938 †
- Family Nododelphinulidae Cox, 1960 †
- Family Phasianellidae Swainson, 1840
- Family Proconulidae Cox, 1960 †
- Family Sclarotrardidae Gründel, Keupp & Lang, 2017 †
- Family Skeneidae W. Clark, 1851
- Family Solariellidae Powell, 1951
- Family Stomatellidae Gray, 1840 accepted as Trochidae Rafinesque, 1815
- Family Stomatiidae Carpenter, 1861 accepted as Trochidae Rafinesque, 1815
- Family Tegulidae Kuroda, Habe & Oyama, 1971
- Family Tricoliidae Woodring, 1928 accepted as Phasianellidae Swainson, 1840
- Family Trochidae Rafinesque, 1815
- Genus Aaleniella Conti & Fischer, 1981 †
- Genus Adaptyxis Kollmann & Peza, 1997 †
- Genus Agagus Jousseaume, 1894
- Genus Alcyna A. Adams, 1860
- Genus Alcynus Paetel, 1875 accepted as Alcyna A. Adams, 1860
- Genus Anisodiloma Finlay, 1926 accepted as Diloma Philippi, 1845
- Genus Anthora Gray, 1857 accepted as Coelotrochus P. Fischer, 1879
- Genus Antisolarium Finlay, 1926
- Genus Aphanotrochus Martens in Moebius, 1880 accepted as Priotrochus P. Fischer, 1879
- Genus Austrochlea Pilsbry, 1889 accepted as Austrocochlea P. Fischer, 1885
- Genus Austrocochelea
- Genus Austrocochlea P. Fischer, 1885
- Genus Austrocochlis Finlay & Marwick, 1937 †
- Genus Bankiva Gray, 1857 accepted as Bankivia Krauss, 1848
- Genus Bankivia Krauss, 1848
- Genus Belangeria Fischer in Kiener & Fischer, 1880 accepted as Clanculus Montfort, 1810
- Genus Botelloides Strand, 1928
- Genus Botellus Iredale, 1924 accepted as Botelloides Strand, 1928
- Genus Broderipia Gray, 1847
- Genus Calliotrochus P. Fischer, 1879
- Genus Callistele Cotton & Godfrey, 1935
- Genus Callotrochus Wenz, 1938 †
- Genus Callumbonella Thiele, 1924
- Genus Calthalotia Iredale, 1929
- Genus Camelotrochus B. A. Marshall, 1998 accepted as Trochus Linnaeus, 1758
- Genus Camita Hedley, 1908
- Genus Camitia Gray, 1842
- Genus Camitia Gray, 1840
- Genus Camitia H. Adams & A. Adams, 1854
- Genus Cantallocostoma DeVries, 2007 †
- Genus Cantharida Guérin-Méneville, 1844 accepted as Cantharidus Montfort, 1810
- Genus Cantharidea Tenison-Woods, 1876 accepted as Cantharidus Montfort, 1810
- Genus Cantharidella Pilsbry in Tryon & Pilsbry, 1889
- Genus Cantharidium Schaufuss, 1869 accepted as Cantharidus Montfort, 1810
- Genus Cantharidoscops Galkin, 1955
- Genus Cantharidus Montfort, 1810
- Genus Cantharis Férussac, 1821 accepted as Cantharidus Montfort, 1810
- Genus Cantharius Voigt in Cuvier, 1834 accepted as Cantharidus Montfort, 1810
- Genus Canthiridus Gray, 1840 accepted as Cantharidus Montfort, 1810
- Genus Caragolus Monterosato, 1884 accepted as Phorcus Risso, 1826
- Genus Carinidea Swainson, 1840 accepted as Infundibulum Montfort, 1810
- Genus Carinotrochus Zhang, Zhang & Zhang, 2020
- Genus Cavodiloma Finlay, 1926 accepted as Diloma Philippi, 1845
- Genus Cavostella Laseron, 1954
- Genus Cavotera Laseron, 1954
- Genus Charisma Hedley, 1915
- Genus Chlorodiloma Pilsbry in Tryon & Pilsbry, 1889
- Genus Chrysostoma Swainson, 1840
- Genus Chuelskia Kaim, Beisel & Kurushin, 2004 †
- Genus Clanculopsis Monterosato, 1888 accepted as Clanculus Montfort, 1810
- Genus Clanculus Montfort, 1810
- Genus Clangulus de Blainville, 1817 accepted as Clanculus Montfort, 1810
- Genus Clelandella Winckworth, 1932
- Genus Clivia Paetel, 1875 accepted as Olivia Cantraine, 1835
- Genus Clydonochilus P. Fischer, 1890
- Genus Coeloconulus Nützel & Nakazawa, 2012 †
- Genus Coelotrochus P. Fischer, 1879
- Genus Colliculus Monterosato, 1888 accepted as Gibbula Risso, 1826
- Genus Conominolia Finlay, 1926 †
- Genus Conotalopia Iredale, 1929
- Genus Contina Di Cencio, 2016 †
- Genus Cratidentium Donald & Spencer, 2016
- Genus Diloma Philippi, 1845
- Genus Echalia Simroth in Bronn, 1907 accepted as Ethalia H. Adams & A. Adams, 1854
- Genus Elenchus Gray in Dieffenbach, 1843 †
- Genus Elenchus Swainson, 1840 accepted as Cantharidus Montfort, 1810
- Genus Eleuchus Herrmannsen, 1847 †
- Genus Enchelus Anon., 1867
- Genus Enida A. Adams, 1860
- Genus Ethalia H. Adams & A. Adams, 1854
- Genus Ethaliella Pilsbry, 1905
- Genus Ethaliopsis Cossmann, 1918 accepted as Zethalia Finlay, 1926
- Genus Ethminolia Iredale, 1924
- Genus Euchele Reeve, 1858 accepted as Euchelus Philippi, 1847
- Genus Euclanculus Cotton & Godfrey, 1934
- Genus Euriclanculus Cotton & Godfrey, 1934
- Genus Eurytrochus P. Fischer, 1879
- Genus Fagnastesia Nielsen, Frassinetti & Bandel, 2004 †
- Genus Falsotectus Gründel, Keupp & Lang, 2017 †
- Genus Fegula Schaufuss, 1869 † accepted as Tegula Lesson, 1832
- Genus Forskalena Iredale, 1918 accepted as Gibbula Risso, 1826
- Genus Forskalia H. Adams & A. Adams, 1854 accepted as Gibbula Risso, 1826
- Genus Fossarina A. Adams & Angas, 1864
- Genus Fractarmilla Finlay, 1926 accepted as Diloma Philippi, 1845
- Genus Fragella Swainson, 1840 accepted as Clanculus Montfort, 1810
- Genus Francisciconcha Little, Danelian, Herrington & Haymon, 2004 †
- Genus Gena Gray, 1842 accepted as Stomatella Lamarck, 1816
- Genus Gena Gray, 1840 accepted as Gena Gray, 1842
- Genus Gibblula Takatsuki, 1927 accepted as Gibbula Risso, 1826
- Genus Gibbula Risso, 1826
- Genus Gibbulastra Monterosato, 1884 accepted as Gibbula Risso, 1826
- Genus Gibbuliculus Harzhauser, 2021 †
- Genus Gibula Tenison-Woods, 1877 accepted as Gibbula Risso, 1826
- Genus Globulus Schumacher, 1817 accepted as Umbonium Link, 1807
- Genus Granulifera Anistratenko, 2000 †
- Genus Halistylus Dall, 1890
- Genus Helicoscala
- Genus Hisseyagibbula Kershaw, 1955
- Genus Ilerdus Calzada, 1993 †
- Genus Infundibulops Pilsbry in Tryon & Pilsbry, 1889 accepted as Trochus Linnaeus, 1758
- Species Infundibulops cariniferus (Reeve, 1842)
- Species Infundibulops erithreus (Brocchi, 1821)
- Species Infundibulops kochii (Philippi, 1844)
- Genus Infundibulum Montfort, 1810
- Genus Injubinus Carus, 1888 accepted as Jujubinus Monterosato, 1884
- Genus Inkaba Herbert, 1992
- Genus Intistoma DeVries, 2007 †
- Genus Isanda H. Adams & A. Adams, 1854
- Genus Isander Adams, 1862 accepted as Isanda H. Adams & A. Adams, 1854
- Genus Isoclanculus Cotton & Godfrey, 1934
- Genus Iwakawatrochus Kuroda & Habe, 1954
- Genus Jujubinus Monterosato, 1884
- Genus Kaiparathina Laws, 1941
- Genus Kanekotrochus Habe, 1958
- Genus Karabolkia Likharev, 1975 †
- Genus Kaurnella Ludbrook, 1941 †
- Genus Kieltrochus Calzada, 2009 †
- Genus Kolesnikoviella Sladkovskaya, 2017 † accepted as Gibbula Risso, 1826
- Genus Komaitrochus Kuroda & Taki in Kuroda, 1958
- Genus Korenia Friele, 1877 accepted as Gibbula Risso, 1826
- Genus Labio Oken, 1815
- Genus Labio Gray, 1850
- Genus Labis Sowerby, 1842
- Genus Lamperostoma Schaufuss, 1869
- Genus Lamprostoma Swainson, 1840 accepted as Trochus Linnaeus, 1758
- Genus Latona Hutton, 1884 accepted as Chlorodiloma Pilsbry in Tryon & Pilsbry, 1889
- Genus Leiopyrga H. Adams & A. Adams, 1863
- Genus Limax Martyn, 1784 accepted as Cantharidus Montfort, 1810
- Genus Liopyrga Fischer, 1885 accepted as Leiopyrga H. Adams & A. Adams, 1863
- Genus Liotrochus Fischer in Kiener & Fischer, 1880 accepted as Ethalia H. Adams & A. Adams, 1854
- Genus Lirularia Dall, 1909
- Genus Lischkia Cossmann, 1918 accepted as Lischkeia P. Fischer, 1879
- Genus Livona Gray, 1841
- Genus Lurcicula Crosse, 1890 accepted as Turcicula Dall, 1881
- Genus Macroclanculus Cotton & Godfrey, 1934 accepted as Clanculus Montfort, 1810
- Genus Mawhero Marshall, 1998 accepted as Micrelenchus Finlay, 1926
- Genus Melagraphia Gray, 1847 accepted as Diloma Philippi, 1845
- Genus Mesoclanculus Iredale, 1924
- Genus Mesotrochus Kutassy, 1927 † accepted as Callotrochus Wenz, 1938 †
- Genus Micrelenchus Finlay, 1926
- Genus Microclanculus Cotton & Godfrey, 1934
- Genus Microtina Adams in Sowerby, 1854
- Genus Microtis H. Adams & A. Adams, 1850
- Genus Minopa Iredale, 1924
- Genus Minos Hutton, 1884 accepted as Fossarina A. Adams & Angas, 1864
- Genus Minosia Dunker, 1882 accepted as Minolia A. Adams, 1860
- Genus Miofractarmilla Laws, 1948 †
- Genus Mirulinus Monterosato, 1917
- Genus Mondonta Finlay, 1926 accepted as Monodonta Lamarck, 1799
- Genus Monilea Swainson, 1840
- Genus Monilia Gray, 1857 accepted as Monilea Swainson, 1840
- Genus Monodon Lamarck in Cuvier, 1817 accepted as Monodonta Lamarck, 1799
- Genus Monodonta Lamarck, 1799
- Genus Monodontes Montfort, 1810
- Genus Nachoeroplax Sowerby, 1903
- Genus Nanula Thiele, 1924
- Genus Neodiloma P. Fischer, 1885 accepted as Diloma Philippi, 1845
- Genus Neomonodonta Kuroda & Habe, 1971 accepted as Monodonta Lamarck, 1799
- Genus Neomphalius Fischer, 1885
- Genus Neptheusa Leach, 1852 accepted as Phorcus Risso, 1826
- Genus Norrissia Berry, 1907 accepted as Norrisia Bayle, 1880
- Genus Notogibbula Iredale, 1924
- Genus Odontis Sowerby, 1825
- Genus Odontotrochus P. Fischer, 1880
- Genus Omphalomargarites Habe & Ito, 1965
- Genus Osilinus Philippi, 1847 accepted as Phorcus Risso, 1826
- Genus Osolinus Bell, 1898 † accepted as Osilinus Philippi, 1847
- Genus Ossilinus Mörch, 1852 † accepted as Osilinus Philippi, 1847
- Genus Otavia Risso, 1826 accepted as Clanculus Montfort, 1810
- Genus Ottavia Pallary, 1912
- Genus Oxystele Philippi, 1847
- Genus Pachydontella Marwick, 1948 †
- Genus Pagodatrochus Herbert, 1989
- Genus Paraclanculus Finlay, 1926
- Genus Parminolia Iredale, 1929
- Genus Paroxystele Schultz, 1970
- Genus Perinia Paetel, 1887 accepted as Perrinia H. Adams & A. Adams, 1854
- Genus Phasianotrochus P. Fischer, 1885
- Genus Phorchus Monterosato, 1923 accepted as Phorcus Risso, 1826
- Genus Phorcus Risso, 1826
- Genus Photinia Rochebrune & Mabille, 1885 accepted as Photinula H. Adams & A. Adams, 1854
- Genus Pictodiloma Habe, 1946
- Genus Pimpellies Gistl, 1848 accepted as Monodonta Lamarck, 1799
- Genus Piscoacritia DeVries & Hess, 2004 †
- Genus Planitrochus Perner in Barrande, 1903
- Genus Plocamotis P. Fischer, 1885 accepted as Stomatella Lamarck, 1816
- Genus Plumbelenchus Finlay, 1926 accepted as Cantharidus Montfort, 1810
- Genus Polydonta Schumacher, 1817 accepted as Trochus Linnaeus, 1758
- Genus Polyodonta Agassiz, 1846
- Genus Praecia Gray, 1857
- Genus Priotrochus P. Fischer, 1879
- Genus Prothalotia Thiele, 1930 †
- Genus Pseudominolia Herbert, 1992
- Genus Pseudostomatella Thiele, 1924
- Genus Pseudotalopia Habe, 1961
- Genus Pulchrastele Iredale, 1929
- Genus Putseysia Monterosato, 1890 accepted as Putzeysia Sulliotti, 1889
- Genus Robur Kolesnikov, 1939 † accepted as Gibbula Risso, 1826
- Genus Robus † accepted as Gibbula Risso, 1826
- Genus Roseaplagis Donald & Spencer, 2016
- Genus Rosella Cossmann, 1925 †
- Genus Rossiteria Brazier, 1895
- Genus Rotella Lamarck, 1822 accepted as Umbonium Link, 1807
- Genus Rubritrochus L. Beck, 1995
- Genus Sarmatigibbula Sladkovskaya, 2017 † accepted as Gibbula Risso, 1826
- Genus Scorbiculinus Pallary, 1902
- Genus Scrobiculinus Monterosato, 1889 accepted as Gibbula Risso, 1826
- Genus Sericominolia Kuroda & Habe, 1954
- Genus Solanderia P. Fischer, 1879 accepted as Rossiteria Brazier, 1895
- Genus Solariellum Bronn, 1848 † accepted as Solariella S. Wood, 1842
- Genus Spratticulus Nordsieck, 1982 accepted as Gibbula Risso, 1826
- Genus Spurculus Nordsieck, 1982 accepted as Gibbula Risso, 1826
- Genus Steromphala Gray, 1847 accepted as Gibbula Risso, 1826
- Genus Steromphalus Mörch, 1852 accepted as Steromphala Gray, 1847
- Genus Stomata Gray, 1821 accepted as Stomatia Helbling, 1779
- Genus Stomatella Lamarck, 1816
- Genus Stomatella Rafinesque, 1815 accepted as Stomatella Lamarck, 1816
- Genus Stomatia Helbling, 1779
- Genus Stomatolina Iredale, 1937
- Genus Stomatulus Nordsieck, 1982 accepted as Gibbula Risso, 1826
- Genus Stomax Montfort, 1810 accepted as Stomatia Helbling, 1779
- Genus Strigosella Sacco, 1896 accepted as Gibbula Risso, 1826
- Genus Stromatia Griffith, 1834 accepted as Stomatia Helbling, 1779
- Genus Suchium Makiyama, 1924 accepted as Umbonium Link, 1807
- Genus Synaptocochlea Pilsbry in Tryon & Pilsbry, 1890
- Genus Syncera Gray, 1821
- Genus Talapena Cossmann, 1920 accepted as Talopena Iredale, 1918
- Genus Talopena Iredale, 1918 accepted as Monilea Swainson, 1840
- Genus Talopia Gray, 1842 accepted as Monilea Swainson, 1840
- Genus Techis Hall, 1867 accepted as Trochus Linnaeus, 1758
- Genus Tegura Makiyama, 1923 † accepted as Tegula Lesson, 1832
- Genus Thaliota accepted as Thalotia Gray, 1847
- Genus Thalotea Hall, 1867 accepted as Thalotia Gray, 1847
- Genus Thalotia Gray, 1847
- Genus Thaltia
- Genus Thorista Iredale, 1915 accepted as Coelotrochus P. Fischer, 1879
- Genus Thoristella Iredale, 1915 accepted as Coelotrochus P. Fischer, 1879
- Genus Torchus Pilsbry, 1889 accepted as Trochus Linnaeus, 1758
- Genus Tosatrochus MacNeil, 1961 †
- Genus Triadostoma Nützel, 2006 †
- Genus Trochidon Swainson, 1840
- Genus Trochinella Iredale, 1937 accepted as Calliotrochus P. Fischer, 1879
- Genus Trochoclea Angas, 1867 †
- Genus Trochocochela Cossmann, 1918 †
- Genus Trochocochlea Mörch, 1852 † accepted as Phorcus Risso, 1826
- Genus Trochodon Agassiz, 1846 †
- Genus Trochus Linnaeus, 1758
- Genus Trochuscus Paetel, 1875 accepted as Norrisia Bayle, 1880
- Genus Trockus Monterosato, 1890 accepted as Trochus Linnaeus, 1758
- Genus Trococochlea Bell, 1898 †
- Genus Trocus Ponzi, 1872 accepted as Trochus Linnaeus, 1758
- Genus Tumidulus Nordsieck, 1982 accepted as Gibbula Risso, 1826
- Genus Turcia Paetel, 1875 accepted as Turcica H. Adams & A. Adams, 1854
- Genus Umbiculus Nordsieck, 1982 accepted as Gibbula Risso, 1826
- Genus Umbonella A. Adams, 1863 accepted as Isanda H. Adams & A. Adams, 1854
- Genus Umbonicum Gray, 1847 accepted as Umbonium Link, 1807
- Genus Umbonium Link, 1807
- Genus Umbotrochus Thiele, 1924 accepted as Callumbonella Thiele, 1924
- Genus Unidens Schinz in Cuvier, 1822 accepted as Monodonta Lamarck, 1799
- Genus Vacekia Conti & Szabo, 1989 † accepted as Contina Di Cencio, 2016 †
- Genus Vanitrochus Iredale, 1929
- Genus Zediloma Finlay, 1926 accepted as Diloma Philippi, 1845
- Genus Zethalia Finlay, 1926
- Family Turbinidae Rafinesque, 1815
- Family Tychobraheidae Horný, 1992 †
- Family Umboniidae H. Adams & A. Adams, 1854 † accepted as Trochidae Rafinesque, 1815
- Family Velainellidae Vasseur, 1880 †
- Family Addisoniidae Dall, 1882
- Family Amberleyidae Wenz, 1938 †
- Family Anatomidae McLean, 1989
- Family Ataphridae Cossmann, 1918
- Family Auritomidae Szabó, Conti, Monari & Wendt, 2019 †
- Family Bathyphytophilidae Moskalev, 1978
- Family Catantostomatidae Wenz, 1938 †
- Family Caymanabyssiidae Marshall, 1986
- Family Cheeneetnukiidae Blodgett & Cook, 2002 †
- Family Chilodontaidae Wenz, 1938
- Family Chilodontidae Wenz, 1938 accepted as Chilodontaidae Wenz, 1938
- Family Choristellidae Bouchet & Warén, 1979 accepted as Lepetellidae Dall, 1881
- Family Cirridae Cossmann, 1916 †
- Family Clypeosectidae McLean, 1989 accepted as Lepetodrilidae McLean, 1988
- Family Cocculinellidae Moskalev, 1978
- Family Depressizonidae Geiger, 2003
- Family Discohelicidae Schröder, 1995 †
- Family Eotomariidae Wenz, 1938 †
- Family Eucyclidae Koken, 1896 †
- Family Eucycloscalidae Gründel, 2007 †
- Family Farewelliidae Mazaev, 2011 †
- Family Fissurellidae Fleming, 1822
- Family Gorgoleptidae McLean, 1988 accepted as Lepetodrilidae McLean, 1988
- Family Gosseletinidae Wenz, 1938 †
- Family Haliotidae Rafinesque, 1815
- Family Haliotididae accepted as Haliotidae Rafinesque, 1815
- Family Hormotomidae Wenz, 1938 †
- Family Kittlidiscidae †
- Family Larocheidae Finlay, 1927
- Family Laubellidae †
- Family Lepetellidae Dall, 1881
- Family Luciellidae Knight, 1956 †
- Family Melanodrymiidae Salvini-Plawen & Steiner, 1995
- Family Micromphalidae Harper, 2016 †
- Family Murchisoniidae Koken, 1896 †
- Family Neomphalidae McLean, 1981
- Family Osteopeltidae Marshall, 1987
- Family Pavlodiscidae †
- Family Peltospiridae McLean, 1989
- Family Pendromidae Warén, 1991
- Family Phanerotrematidae Knight, 1956 †
- Family Phymatopleuridae Batten, 1956 †
- Family Platyacridae Wenz, 1938 † accepted as Cirridae Cossmann, 1916 †
- Family Plethospiridae Wenz, 1938 † accepted as Hormotomidae Wenz, 1938 †
- Family Pleurotomariidae Swainson, 1840
- Family Pleurotomarioidea (awaiting allocation) †
- Family Polytremariidae Wenz, 1938 †
- Family Porcelliidae von Zittel, 1895 †
- Family Porcellioidea (awaiting allocation) †
- Family Portlockiellidae Batten, 1956 †
- Family Pseudococculinidae Hickman, 1983
- Family Pseudoturcicidae Bandel, 2010 †
- Family Pseudowortheniellidae Bandel, 2009 †
- Family Ptychocaulidae Mazaev, 2011 †
- Family Pyropeltidae McLean & Haszprunar, 1987
- Family Rhaphischismatidae Knight, 1956 †
- Family Rhaphistomellidae Bandel, 2009 †
- Family Schizogoniidae †
- Family Scissurellidae Gray, 1847
- Family Seguenziidae Verril, 1884
- Family Sinuspiridae Mazaev, 2011 †
- Family Stuorellidae Bandel, 2009 †
- Family Sutilizonidae McLean, 1989
- Family Temnocinclidae McLean, 1989
- Family Temnotropidae †
- Family Trachysmatidae Thiele, 1925 accepted as Pendromidae Warén, 1991
- Family Trochaclididae Thiele, 1928
- Family Trochoidea (awaiting allocation)
- Family Trochotomidae Cox, 1960 †
- Family Zygitidae †
- Genus Kelheimia Gründel & Nützel, 2024 †
- 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
- 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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