Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
3 The last expanded taxon is highlighted
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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
- 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
- Family Acanthonematidae Wenz, 1938 †
- Family Amphimelaniidae Fischer & Crosse, 1891
- Family Ampullinidae Cossmann, 1918
- Family Ampullospiridae Cox, 1930 accepted as Ampullinidae Cossmann, 1918
- Family Batillariidae Thiele, 1929
- Family Brachytrematidae Cossmann, 1906 †
- Family Brachytremidae Cossmann, 1906 † accepted as Brachytrematidae Cossmann, 1906 †
- Family Campanilidae Douvillé, 1904
- Family Canterburyellidae †
- Family Cassiopidae Beurlen, 1967 †
- Family Cerithiidae Férussac, 1819
- Family Cerithioidea (awaiting allocation)
- Family Cryptaulacidae Gründel, 1976 †
- Family Dialidae Ludbrook, 1941
- Family Diastomatidae Cossmann, 1893
- Family Diastomidae Cossmann, 1893 accepted as Diastomatidae Cossmann, 1893
- Family Eustomatidae Cossmann, 1906 †
- Family Eustomidae Cossmann, 1906 † accepted as Eustomatidae Cossmann, 1906 †
- Family Fossaridae A. Adams, 1860 accepted as Planaxidae Gray, 1850
- Family Ladinulidae †
- Family Lanascalidae †
- Family Litiopidae Gray, 1847
- Family Maoraxidae Bandel, Gründel & Maxwell, 2000 †
- Family Melanatriidae Thiele, 1921 accepted as Pachychilidae Troschel, 1857
- Family Melanidae accepted as Thiaridae Troschel, 1857
- Family Melaniidae Children, 1823 accepted as Thiaridae Troschel, 1857
- Family Melanopsidae H. Adams & A. Adams, 1854
- Family Metacerithiidae †
- Family Modulidae P. Fischer, 1884
- Family Obtortionidae Thiele, 1925 accepted as Scaliolidae Jousseaume, 1912
- Family Pachychilidae Troschel, 1857
- Family Paludomidae Stoliczka, 1868
- Family Pareoridae Finlay & Marwick, 1937 † accepted as Turritellidae Lovén, 1847
- Family Planaxidae Gray, 1850
- Genus Anafossarus Iredale, 1936
- Genus Angiola Dall, 1926
- Genus Chilkaia Preston, 1915
- Genus Couthonyia Simroth in Bronn, 1907 accepted as Couthouyia A. Adams, 1860
- Genus Couthoya Schaufuss, 1869 accepted as Couthouyia A. Adams, 1860
- Genus Fissilabia Macgillivray, 1836
- Genus Fissilabra Paetel, 1875 accepted as Fissilabia Macgillivray, 1836
- Genus Fissilabria Gray, 1847 accepted as Fissilabia Macgillivray, 1836
- Genus Fossar Gray, 1840
- Genus Fossar Gray, 1847 accepted as Fossarus Philippi, 1841
- Genus Fossarius Whitfield, 1891 accepted as Fossarus Philippi, 1841
- Genus Fossarus Philippi, 1841
- Genus Gotoina Dunker, 1882
- Genus Gottonia Preston, 1908
- Genus Halotapada Iredale, 1936
- Genus Halotapoda Iredale, 1936
- Genus Henia accepted as Hinea Gray, 1847
- Genus Hinea Gray, 1847
- Genus Holcostoma H. Adams & A. Adams, 1853
- Species Holcostoma piliger (Philippi, 1849)
- Species Holcostoma setigerum A. Adams, 1854
- Genus Leioplanaxis Lozouet & Maestrati, 1994 †
- Genus Maravignia Aradas & Maggiore in Philippi, 1844 accepted as Fossarus Philippi, 1841
- Genus Orthochilus Cossmann, 1889 †
- Genus Placaria Paetel, 1875 accepted as Planaxis Lamarck, 1822
- Genus Planax Récluz, 1843 accepted as Planaxis Lamarck, 1822
- Genus Planaxa Quoy & Gaimard in d'Urville, 1833 accepted as Planaxis Lamarck, 1822
- Genus Planaxis Lamarck, 1822
- Genus Plataxis Desmarest in Chenu, 1859 accepted as Planaxis Lamarck, 1822
- Genus Quoya Deshayes in Lamarck, 1843 accepted as Quoyia Gray in Beechey, 1839
- Genus Quoyia Gray in Beechey, 1839 accepted as Fissilabia Macgillivray, 1836
- Genus Simulathena Houbrick, 1992
- Genus Supplanaxis Thiele, 1929
- Family Pleisotrochidae † accepted as Plesiotrochidae Gougerot & Le Renard, 1987
- Family Plesiotrochidae Gougerot & Le Renard, 1987
- Family Pleuroceridae P. Fischer, 1885 (1863)
- Family Popenellidae Bandel, 1992 †
- Family Potamididae H. Adams & A. Adams, 1854
- Family Prisciphoridae †
- Family Procerithiidae Cossmann, 1905 †
- Family Propupaspiridae Nützel, Pan & Erwin, 2002 †
- Family Prostyliferidae Bandel, 1992 †
- Family Scaliolidae Jousseaume, 1912
- Family Semisulcospiridae Morrison, 1952
- Family Siliquariidae Anton, 1838
- Family Syrnolopsidae Bourguignat, 1890 accepted as Paludomidae Stoliczka, 1868
- Family Terebrellidae Delpey, 1941 †
- Family Thiaridae Troschel, 1857
- Family Trypanaxidae Houbrick, 1990 †
- Family Turritellidae Lovén, 1847
- Family Zardinellopsidae Bandel, 2006 †
- Family Zemelanopsidae Neiber & Glaubrecht, 2019
- 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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