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
- Order Macluritina †
- Order Mesogastropoda
- Order Mimospirida †
- Order Murchisoniina †
- Order Muricoidea
- Order Neogastropoda
- Family Acusidae Gray, 1853 accepted as Terebridae Mörch, 1852
- Family Admetidae Troschel, 1865 accepted as Cancellariidae Gray, 1853
- Family Anachidae Golikov & Starobogatov, 1972 accepted as Columbellidae Swainson, 1840
- Family Ancillariidae Swainson, 1840
- Family Babyloniidae Kuroda, Habe & Oyama, 1971
- Family Bellolividae Kantor, Fedosov, Puillandre, Bonillo & Bouchet, 2017
- Family Belomitridae Kantor, Puillandre, Rivasseau & Bouchet, 2012
- Family Benthobiidae Kantor, Fedosov, Puillandre, Bonillo & Bouchet, 2017
- Family Borsoniidae Bellardi, 1875
- Family Bouchetispiridae Kantor, Strong & Puillandre, 2012
- Family Buccinidae Rafinesque, 1815
- Family Buccinoidea (awaiting allocation)
- Family Buccinulidae Finlay, 1928 † accepted as Buccinidae Rafinesque, 1815
- Family Busyconidae Wade, 1917 (1867)
- Family Cancellariidae Gray, 1853
- Family Charitodoronidae Fedosov, Herrmann, Kantor & Bouchet in Fedosov et al., 2018
- Family Clathurellidae H. Adams & A. Adams, 1858
- Family Clavatulidae Gray, 1853
- Family Clavidae Casey, 1904 accepted as Drilliidae Olsson, 1964
- Family Clavilithidae Vermeij & M. A. Snyder, 2018 †
- Family Clionellidae Stimpson, 1865 accepted as Clavatulidae Gray, 1853
- Family Cochlespiridae Powell, 1942
- Family Colubrariidae Dall, 1904
- Family Columbariidae Tomlin, 1928
- Family Columbellidae Swainson, 1840
- Family Cominellidae accepted as Buccinidae Rafinesque, 1815
- Family Concholepadidae Perrier, 1897 accepted as Muricidae Rafinesque, 1815
- Family Conidae Fleming, 1822
- Family Conilithidae Tucker & Tenorio, 2009 accepted as Conidae Fleming, 1822
- Family Conoidea (awaiting allocation)
- Family Conoidea incertae sedis
- Family Conorbidae de Gregorio, 1880
- Family Coralliophilidae Chenu, 1859 accepted as Muricidae Rafinesque, 1815
- Family Costellariidae MacDonald, 1860
- Family Cynodontidae MacDonald, 1860 accepted as Turbinellidae Swainson, 1840
- Family Cystiscidae Stimpson, 1865
- Family Dolicholatiridae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, Clark & Bouchet, 2021
- Family Drilliidae Olsson, 1964
- Family Echinofulguridae Petuch, 1994 †
- Family Eosiphonidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, Clark & Bouchet, 2021
- Family Fasciolariidae Gray, 1853
- Family Fusidae Iredale, 1915 † accepted as Colubrariidae Dall, 1904
- Family Granulinidae Coovert & Coovert, 1995
- Family Harpidae Bronn, 1849
- Family Horaiclavidae Bouchet, Kantor, Sysoev & Puillandre, 2011
- Family Johnwyattiidae †
- Family Magilidae Thiele, 1925 accepted as Muricidae Rafinesque, 1815
- Family Mangeliidae P. Fischer, 1883
- Family Marginellidae Fleming, 1828
- Family Melapiidae Kantor, 1991 † accepted as Strepsiduridae Cossmann, 1901 †
- Family Melatomidae Gill, 1871 accepted as Clavatulidae Gray, 1853
- Family Melongenidae Gill, 1867
- Family Mitridae Swainson, 1831
- Family Mitrolumnidae Sacco, 1904 accepted as Mitromorphidae Bouchet, Kantor, Sysoev & Puillandre, 2011
- Family Mitromorphidae Bouchet, Kantor, Sysoev & Puillandre, 2011
- Family Muricidae Rafinesque, 1815
- Family Muricoidea (awaiting allocation)
- Family Nassariidae Iredale, 1916
- Family Nassidae accepted as Nassariidae Iredale, 1916
- Family Neogastropoda (awaiting allocation)
- Family Neptuneidae Stimpson, 1865 accepted as Buccinidae Rafinesque, 1815
- Family Nucellidae Salisbury, 1940 accepted as Muricidae Rafinesque, 1815
- Family Olivancillariidae Golikov & Starobogatov, 1975 accepted as Olividae Latreille, 1825
- Family Olivellidae Troschel, 1869
- Family Olividae Latreille, 1825
- Family Paladmetidae Stephenson, 1941 † accepted as Cancellariidae Gray, 1853
- Family Perissityidae Popenoe & Saul, 1987 †
- Family Peristerniidae Tryon, 1880 accepted as Fasciolariidae Gray, 1853
- Family Pervicaciidae Rudman, 1969 accepted as Terebridae Mörch, 1852
- Family Pholidotomidae †
- Family Pisaniidae Gray, 1857
- Family Pleioptygmatidae Quinn, 1989 accepted as Mitridae Swainson, 1831
- Family Pleurotomidae accepted as Turridae Swainson, 1840
- Family Prodotiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, Clark & Bouchet, 2021
- Family Prosiphonidae Powell, 1951
- Family Pseudolividae de Gregorio, 1880
- Family Pseudomelatomidae Morrison, 1966
- Family Ptychatractidae Stimpson, 1865
- Family Purpuridae Children, 1823 accepted as Muricidae Rafinesque, 1815
- Family Pyramimitridae Cossmann, 1901
- Family Pyrenidae Suter, 1909 accepted as Columbellidae Swainson, 1840
- Family Pyrifusidae Bandel, 2000 †
- Family Raphitomidae Bellardi, 1875
- Family Rapidae Kuroda, 1941 accepted as Muricidae Rafinesque, 1815
- Family Sarganidae †
- Family Speightiidae Powell, 1942 †
- Family Strepsiduridae Cossmann, 1901 †
- Family Strictispiridae McLean, 1971
- Family Taiomidae Finlay & Marwick, 1937 †
- Family Taranteconidae Tucker & Tenorio, 2009 accepted as Conidae Fleming, 1822
- Family Terebridae Mörch, 1852
- Family Thaididae Jousseaume, 1888 accepted as Muricidae Rafinesque, 1815
- Family Thatcheriidae Powell, 1942 accepted as Raphitomidae Bellardi, 1875
- Family Trophonidae Cossman, 1903 accepted as Muricidae Rafinesque, 1815
- Family Tudiclidae Cossmann, 1901 † accepted as Turbinellidae Swainson, 1840
- Family Turbinellidae Swainson, 1840
- Family Turridae Swainson, 1840
- Family Vasidae H. Adams & A. Adams, 1853 accepted as Turbinellidae Swainson, 1840
- Family Vexillidae Thiele, 1929 accepted as Costellariidae MacDonald, 1860
- Family Volutidae Rafinesque, 1815
- Genus Accithoe Paetel, 1875 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Accithoë Paetel, 1875 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Acithoe Schaufuss, 1869 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Acithoë Schaufuss, 1869 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Adelomelon Dall, 1906
- Genus Aeneta Carpenter, 1864 accepted as Enaeta H. Adams & A. Adams, 1853
- Genus Alcitho Marwick, 1926 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Alcithoe H. Adams & A. Adams, 1853
- Genus Alcithoë Adams, 1853 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Amorena Iredale, 1929 accepted as Amoria Gray, 1855
- Genus Amoria Gray, 1855
- Genus Ampulla Röding, 1798
- Genus Arctomelon Dall, 1915
- Genus Argentovoluta Vazquez & Caldini, 1989
- Genus Athlaeta Conrad, 1860 accepted as Athleta Conrad, 1853
- Genus Athleta Conrad, 1853
- Genus Atraktus Gardner, 1937 †
- Genus Aulica Gray, 1847 accepted as Cymbiola Swainson, 1831
- Genus Aulicia Dollfus, 1911 †
- Genus Aulicina Rovereto, 1899 accepted as Cymbiola Swainson, 1831
- Genus Aurina accepted as Scaphella Swainson, 1832
- Genus Aurinia H. Adams & A. Adams, 1853 accepted as Scaphella Swainson, 1832
- Genus Ausoba H. Adams & A. Adams, 1853 accepted as Cymbiola Swainson, 1831
- Genus Bathyaurinia Clench & Aguayo, 1940 accepted as Volutifusus Conrad, 1863
- Genus Bondarevia Bail & Chino, 2010 accepted as Saotomea Habe, 1943
- Genus Borcomelon Cossmann, 1921 †
- Genus Boreomelon Dall, 1918 accepted as Arctomelon Dall, 1915
- Genus Butonius Martin, 1933 † accepted as Calliotectum Dall, 1890
- Genus Calliotectum Dall, 1890
- Genus Calliotratum Dollfus, 1919 accepted as Calliotectum Dall, 1890
- Genus Callipara Gray, 1847
- Genus Canalilyria Bail & Poppe, 2001 accepted as Callipara Gray, 1847
- Genus Canamoria Bondarev, 1995 accepted as Amoria Gray, 1855
- Genus Caricellopsis Petuch & Sargent, 2011 accepted as Scaphella Swainson, 1832
- Genus Chiraluta Olsson, 1931 †
- Genus Chlorosina Gray, 1858 accepted as Voluta Linnaeus, 1758
- Genus Clenchina Pilsbry & Olsson, 1953 accepted as Scaphella Swainson, 1832
- Genus Cordilyria Bayer, 1971
- Genus Cottonia Iredale, 1934 accepted as Livonia Gray, 1855
- Genus Ctenilyria Woodring, 1964 †
- Genus Cymba Marche-Marchaud, 1968 accepted as Cymbium Röding, 1798
- Genus Cymba Broderip, 1826 accepted as Cymbium Röding, 1798
- Genus Cymbiola Swainson, 1831
- Genus Cymbiola Swainson, 1834
- Genus Cymbiolacca Iredale, 1929 † accepted as Cymbiola Swainson, 1831
- Genus Cymbiolena Iredale, 1929 accepted as Cymbiola Swainson, 1831
- Genus Cymbiolista Iredale, 1929 accepted as Amoria Gray, 1855
- Genus Cymbium Röding, 1798
- Genus Dallivoluta Okutani, 1982 accepted as Lyria Gray, 1847
- Genus Enaeta H. Adams & A. Adams, 1853
- Genus Eopsephaea Fischer, 1883 †
- Genus Eopsephia Harris, 1897 †
- Genus Eoscaphella Stilwell & Zinsmeister, 1992 †
- Genus Eosephaea King, 1933 †
- Genus Eovoluta Pacaud, 2016 †
- Genus Ericusa H. Adams & A. Adams, 1858
- Genus Eteroaulica Rovereto, 1899 †
- Genus Euroscaphella Van Dingenen, Ceulemans & Landau, 2014 †
- Genus Falsilyria Pilsbry & Olsson, 1954 †
- Genus Festilyria Pilsbry & Olsson, 1954
- Genus Fulgaria Eastman, 1900 † accepted as Fulgoraria Schumacher, 1817
- Genus Fulgoraria Schumacher, 1817
- Genus Fulguraria Mörch, 1852 † accepted as Fulgoraria Schumacher, 1817
- Genus Furgoraria Nagao, 1928 † accepted as Fulgoraria Schumacher, 1817
- Genus Fusivoluta Martens, 1902
- Genus Gilvostia Iredale, 1937 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Gosavia Stoliczka, 1866 †
- Genus Guevillea Filhol, 1885 accepted as Guivillea Watson, 1886
- Genus Guivillea Watson, 1886 accepted as Provocator Watson, 1882
- Species Guivillea alabastrina (Watson, 1882)
- Genus Halia Risso, 1829 accepted as Ampulla Röding, 1798
- Genus Harpella Gray, 1858 accepted as Lyria Gray, 1847
- Genus Harpeola Dall, 1907
- Genus Harpovoluta Thiele, 1912
- Genus Harpula Swainson, 1831 accepted as Voluta Linnaeus, 1758
- Genus Harpulina Dall, 1906
- Genus Heteroaulica Cossmann, 1899 †
- Genus Howellia Clench & Aguayo, 1941 accepted as Calliotectum Dall, 1890
- Genus Indolyria Bail & Poppe, 2001 accepted as Lyria Gray, 1847
- Genus Iredalina Finlay, 1926 accepted as Provocator Watson, 1882
- Genus Janeithoe Pilsbry & Olsson, 1954 † accepted as Adelomelon Dall, 1906
- Genus Kurodina Rehder, 1969
- Genus Lapparia Conrad, 1855 †
- Genus Leioderma Tryon in Tryon & Pilsbry, 1882 † accepted as Liopeplum Dall, 1890 †
- Genus Leiostoma Swainson, 1840 [2]
- Genus Leiostomus Swainson, 1840
- Genus Leiotomus Gray, 1847
- Genus Leitomus Paetel, 1875
- Genus Leporemax Iredale, 1937 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Leptoscapha P. Fischer, 1883 †
- Genus Lioderma Conrad, 1865 † accepted as Liopeplum Dall, 1890 †
- Genus Liopephene Riedel, 1932 † accepted as Liopeplum Dall, 1890 †
- Genus Liopeplum Dall, 1890 †
- Genus Livonia Gray, 1855
- Genus Lyrenata
- Genus Lyreneta Iredale, 1937 accepted as Lyria Gray, 1847
- Genus Lyria Gray, 1847
- Genus Lyriopsis Merle, Pacaud, Métais, Bartolini, Lashari, Brohi, Solangi, Marivaux & Welcomme, 2014 †
- Genus Lyrischapa Aldrich, 1911 †
- Genus Maculopeplum Dall, 1906 accepted as Scaphella Swainson, 1832
- Genus Magnavictoria Poppe & Tagaro, 2020 accepted as Cymbiola Swainson, 1831
- Genus Mamillana Crosse, 1871 accepted as Livonia Gray, 1855
- Genus Mamillina Tate & May, 1901
- Genus Mauia Marwick, 1926 † accepted as Mauira Marwick, 1943 †
- Genus Mauira Marwick, 1943 †
- Genus Mauithoe Finlay, 1930 †
- Genus Mauria † accepted as Mauira Marwick, 1943 †
- Genus Melo Broderip in Sowerby I, 1826
- Genus Melocorona Pilsbry & Olsson, 1954 † accepted as Melo Broderip in Sowerby I, 1826
- Genus Mesericusa Iredale, 1929 accepted as Ericusa H. Adams & A. Adams, 1858
- Genus Metamelon Marwick, 1926 †
- Genus Microlyria Bail & Poppe, 2001 accepted as Lyria Gray, 1847
- Genus Minicymbiola Klappenbach, 1979
- Genus Miomelon Dall, 1907
- Genus Miopleiona Dall, 1907 † accepted as Fulgoraria Schumacher, 1817
- Genus Miopleionia Loel & Corey, 1932 † accepted as Miopleiona Dall, 1907 †
- Genus Mitraelyria Bail & Poppe, 2001 accepted as Lyria Gray, 1847
- Genus Mitreala accepted as Mitra Lamarck, 1798
- Genus Mitreola Swainson, 1833 †
- Genus Montia Gilbert, 1973 †
- Genus Musashia Hayashi, 1966 † accepted as Fulgoraria Schumacher, 1817
- Genus Musica Gray, 1847 accepted as Voluta Linnaeus, 1758
- Genus Myobarbum Sohl, 1963 †
- Genus Mysterostropha Olsson, 1964 †
- Genus Nannamoria Iredale, 1929
- Genus Nanomelon Leal & Bouchet, 1989
- Genus Neoatheta Dukooizen, 1924 † accepted as Neoathleta Bellardi, 1890 †
- Genus Neoathleta Bellardi, 1890 †
- Genus Neptuneopsis Sowerby III, 1898
- Genus Nipponomelon Shikama, 1967 †
- Genus Noathleta Cossmann, 1925 † accepted as Neoathleta Bellardi, 1890 †
- Genus Notopeplum Finlay, 1927
- Genus Notoplejona Marwick, 1926 †
- Genus Notovoluta Cotton, 1946
- Genus Odontocymbiola Clench & Turner, 1964
- Genus Ortmannia Chiesa, Parma & Camacho, 1995 †
- Genus Otocheilus Conrad, 1865 † accepted as Lyria Gray, 1847
- Genus Pachycymbiola Ihering, 1907
- Genus Pachymelon Marwick, 1926 †
- Genus Pakiluta Merle, Pacaud, Métais, Bartolini, Lashari, Brohi, Solangi, Marivaux & Welcomme, 2014 †
- Genus Palaeomelon Nielsen & Frassinetti, 2007 †
- Genus Paleolyria Garvie, 2021 † accepted as Lyria Gray, 1847
- Genus Palomelon Finlay, 1926 accepted as Alcithoe H. Adams & A. Adams, 1853
- Genus Paramoria McMichael, 1960
- Genus Parvivoluta Wade, 1926 †
- Genus Pejona Hanna, 1927 †
- Genus Peruluta Olsson, 1928 †
- Genus Pleiona Paetel, 1875 †
- Genus Plejona Röding, 1798 † accepted as Voluta Linnaeus, 1758
- Genus Plicoliva Petuch, 1979
- Genus Plicolyria Bail & Poppe, 2001 accepted as Lyria Gray, 1847
- Genus Priamus Beck in Lamarck, 1838 accepted as Ampulla Röding, 1798
- Genus Prodallia Bartsch, 1942 accepted as Calliotectum Dall, 1890
- Genus Proscaphella Ihering, 1907 accepted as Miomelon Dall, 1907
- Genus Provocator Watson, 1882
- Genus Psephaea Crosse, 1871
- Genus Pseudocymbiola McMichael, 1961 † accepted as Cymbiolacca Iredale, 1929 †
- Genus Pseudocymbium Cossmann, 1899 accepted as Provocator Watson, 1882
- Genus Pseudolyria Martin, 1931 †
- Genus Pterospira Harris, 1897
- Genus Rehderia Clench, 1946 accepted as Scaphella Swainson, 1832
- Genus Relegamoria Iredale, 1936 accepted as Amoria Gray, 1855
- Genus Sannalyria Pilsbry & Olsson, 1954 †
- Genus Saotomea Habe, 1943
- Genus Scapha Gray, 1855 accepted as Cymbiola Swainson, 1831
- Genus Scaphella Swainson, 1832
- Genus Scappella Mörch, 1858 accepted as Scaphella Swainson, 1832
- Genus Septoscapha Cossmann, 1889 † accepted as Leptoscapha P. Fischer, 1883 †
- Genus Simililyria Bail & Poppe, 2001 accepted as Callipara Gray, 1847
- Genus Sindhiluta Merle, Pacaud, Métais, Bartolini, Lashari, Brohi, Solangi, Marivaux & Welcomme, 2014 †
- Genus Spinomelon Marwick, 1926 †
- Genus Surculites Conrad, 1865 †
- Genus Sycospira Palmer, 1953 †
- Genus Tectaplica Wade, 1916 †
- Genus Tectoplica Cossmann, 1917 † accepted as Tectaplica Wade, 1916 †
- Genus Tenebrincola Harasewych & Kantor, 1991
- Genus Teramachia Kuroda, 1931 accepted as Calliotectum Dall, 1890
- Genus Teremelon Marwick, 1926 †
- Genus Ternivoluta Martens, 1897 accepted as Athleta Conrad, 1853
- Genus Tractolira Dall, 1896
- Genus Valuta Hörnes & Auinger, 1880 accepted as Voluta Linnaeus, 1758
- Genus Vespertilio Mörch, 1852
- Genus Volithilites Gregorio, 1880 † accepted as Volutilithes Swainson, 1831 †
- Genus Volubilithes Desio, 1929 † accepted as Volutilithes Swainson, 1831 †
- Genus Voluta Linnaeus, 1758
- Genus Volutalithes Conrad, 1855 † accepted as Volutilithes Swainson, 1831 †
- Genus Volutarius Duméril, 1805 accepted as Voluta Linnaeus, 1758
- Genus Volutella d'Orbigny, 1841 accepted as Zidona H. Adams & A. Adams, 1853
- Genus Volutifusus Conrad, 1863
- Genus Volutilites Herrmannsen, 1849 † accepted as Volutilithes Swainson, 1831 †
- Genus Volutilithes Swainson, 1831 †
- Genus Volutipysma Rehder, 1969 accepted as Fulgoraria Schumacher, 1817
- Genus Volutoconus Crosse, 1871
- Genus Volutocorbis Dall, 1890 accepted as Athleta Conrad, 1853
- Genus Volutocorbix
- Genus Volutocorona Pilsbry & Olsson, 1954 † accepted as Cymbiola Swainson, 1831
- Genus Volutolites Gray, 1855 † accepted as Volutilithes Swainson, 1831 †
- Genus Volutolyria Crosse, 1877 accepted as Voluta Linnaeus, 1758
- Genus Volutospina Newton, 1906
- Genus Volutospinna Dukovizen, 1924 accepted as Volutospina Newton, 1906
- Genus Volutovetus Pilsbry & Olsson, 1954 †
- Genus Waihaoia Marwick, 1926 accepted as Spinomelon Marwick, 1926 †
- Genus Wangaluta Stilwell, 2016 †
- Genus Weaveria Clench & Turner, 1964 accepted as Adelomelon Dall, 1906
- Genus Woodsivoluta Pilsbry & Olsson, 1954 †
- Genus Wyvillea Watson, 1882 accepted as Provocator Watson, 1882
- Genus Yetus Bowdich, 1822 accepted as Cymbium Röding, 1798
- Genus Zebramoria Iredale, 1929 accepted as Amoria Gray, 1855
- Genus Zidona H. Adams & A. Adams, 1853
- Genus Zygomelon Harasewych & Marshall, 1995 †
- Family Volutodermatidae Pilsbry & Olsson, 1954 †
- Family Volutomitridae Gray, 1854
- Family Weeksiidae Sohl, 1960 †
- Family Xancidae Pilsbry, 1922 accepted as Turbinellidae Swainson, 1840
- Family Zemiridae Iredale, 1924 accepted as Pseudolividae de Gregorio, 1880
- 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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