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
- Genus Acicularia Carus & Gerstaecker, 1875
- Genus Aciculina A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Adenus Yokoyama, 1926 accepted as Adinus H. Adams & A. Adams, 1853
- Genus Adimus Schaufuss, 1869 accepted as Adinus H. Adams & A. Adams, 1853
- Genus Adinassa Horro, Schönherr & Rolán, 2018
- Genus Adinopsis Odhner, 1923 accepted as Adinassa Horro, Schönherr & Rolán, 2018
- Genus Adinus H. Adams & A. Adams, 1853 accepted as Bullia Gray, 1833
- Genus Alectrion Montfort, 1810 accepted as Nassarius Duméril, 1805
- Genus Alectryon Melvill, 1918 accepted as Nassarius Duméril, 1805
- Genus Allanassa Iredale, 1929 accepted as Nassarius Duméril, 1805
- Genus Ambullina Palmer, 1937 †
- Genus Amycla H. Adams & A. Adams, 1853 † accepted as Tritia Risso, 1826
- Genus Amyclina Iredale, 1918 accepted as Tritia Risso, 1826
- Genus Anentome Cossmann, 1901 †
- Genus Antillophos Woodring, 1928
- Genus Arcularia Link, 1807 accepted as Nassarius Duméril, 1805
- Genus Arculia Jousseaume, 1888 accepted as Arcularia Link, 1807
- Genus Austronassaria C. Laseron & J. Laseron, 1956 accepted as Nassarius Duméril, 1805
- Genus Ballia Hall, 1867 accepted as Bullia Griffith, 1834
- Genus Bathynassa Ladd, 1976 † accepted as Nassarius Duméril, 1805
- Genus Benthindsia Iredale, 1936 accepted as Nassaria Link, 1807
- Genus Buccianops Gray, 1847 accepted as Buccinanops d'Orbigny, 1841
- Genus Buccinanops d'Orbigny, 1841
- Genus Buccinastrum Pastorino & Simone, 2021
- Genus Buccitrition Conrad, 1865 †
- Genus Bulbia Mörch, 1860 accepted as Bullia Griffith, 1834
- Genus Bullia Griffith, 1834
- Genus Bullia Gray, 1833
- Genus Bulliana Gray in M.E. Gray, 1842 accepted as Bullia Gray, 1833
- Genus Bulliopsis Conrad, 1862 †
- Genus Caesia H. Adams & A. Adams, 1853
- Genus Canidia H. Adams, 1862 accepted as Anentome Cossmann, 1901 †
- Genus Catillon Addicott, 1965 accepted as Nassarius Duméril, 1805
- Genus Cencus Gistel, 1848 accepted as Cyclope Risso, 1826
- Genus Cereobullia Melvill & Peile, 1924 accepted as Bullia Gray, 1833
- Genus Chelenassa Shuto, 1969 † accepted as Nassarius Duméril, 1805
- Genus Clea H. Adams & A. Adams, 1855
- Genus Colwellia Nuttall & J. Cooper, 1973 † accepted as Keepingia Nuttall & J. Cooper, 1973 †
- Genus Coraeophos Makiyama, 1936 †
- Genus Cryptonassarius Cernohorsky, 1975 accepted as Nassarius Duméril, 1805
- Genus Cyclocyrtia Agassiz, 1846 accepted as Cyclope Risso, 1826
- Genus Cyclonassa Swainson, 1840 accepted as Cyclope Risso, 1826
- Genus Cyclope Risso, 1826 accepted as Tritia Risso, 1826
- Genus Cyclops Montfort, 1810 accepted as Cyclope Risso, 1826
- Genus Cyllene Gray, 1834
- Genus Cyllenina Bellardi, 1882 †
- Genus Cymatophos Pilsbry & Olsson, 1941 †
- Genus Demondia Addicott, 1965 † accepted as Caesia H. Adams & A. Adams, 1853
- Genus Demoulea Gray, 1847 accepted as Demoulia Gray, 1838
- Genus Demoulia Gray, 1838
- Genus Demoulinsia accepted as Demoulia Gray, 1838
- Genus Desmoulea Gray, 1847 accepted as Demoulia Gray, 1838
- Species Desmoulea japonica A. Adams, 1854 accepted as Nassarius sufflatus (Gould, 1860)
- Species Desmoulea pinguis Adams, 1853
- Species Desmoulea pyramidalis A. Adams, 1853 accepted as Nassarius pyramidalis (A. Adams, 1853)
- Species Desmoulea ringens A. Adams, 1855 accepted as Nassarius conoidalis (Deshayes in Belanger, 1832)
- Genus Desmoulinsia Dollfus, 1902 accepted as Demoulia Gray, 1838
- Genus Desmoulinsia Woodward, 1851 accepted as Demoulia Gray, 1838
- Genus Desorinassa Nuttall & J. Cooper, 1973 † accepted as Keepingia Nuttall & J. Cooper, 1973 †
- Genus Dorsanum Gray, 1847
- Genus Duplicata Korobkov, 1955 † accepted as Dorsanum Gray, 1847
- Genus Duplicatula Kolesnikov, 1939 † accepted as Dorsanum Gray, 1847
- Genus Eione Risso, 1826 accepted as Nassarius Duméril, 1805
- Genus Engoniophos Woodring, 1928
- Genus Eotritiaria Garvie, 2021 † accepted as Tritiaria Conrad, 1865 †
- Genus Europhos Landau, Harzhauser, İslamoğlu & da Silva, 2013 †
- Genus Fackia Nordsieck, 1972 † accepted as Nassarius Duméril, 1805
- Genus Fluviodorsum Böttger, 1885 accepted as Dorsanum Gray, 1847
- Genus Glabrinassa Shuto, 1969 † accepted as Nassarius Duméril, 1805
- Genus Globinassa Petuch, 1994 †
- Genus Gussonea Monterosato, 1912 accepted as Nassarius Duméril, 1805
- Genus Hannonia Pallary, 1920 accepted as Aciculina A. Adams, 1853
- Genus Hebra H. Adams & A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Hima Gray, 1852 † accepted as Tritia Risso, 1826
- Genus Hindsia A. Adams, 1855 accepted as Nassaria Link, 1807
- Genus Hinia Leach, 1847 accepted as Tritia Risso, 1826
- Genus Ilyanassa Stimpson, 1865 accepted as Tritia Risso, 1826
- Genus Kebra Ayres, 1916 accepted as Hebra H. Adams & A. Adams, 1853
- Genus Keepingia Nuttall & J. Cooper, 1973 †
- Genus Leiodoma Paetel, 1875
- Genus Leiodomus Swainson, 1840 accepted as Bullia Gray, 1833
- Genus Liodomus Agassiz, 1846
- Genus Liostomus Mörch, 1852
- Genus Lisbonia Palmer, 1937 †
- Genus Massa Hall, 1867
- Genus Metaphos Olsson, 1964 †
- Genus Microfusus Dall, 1916 accepted as Nassaria Link, 1807
- Genus Microphos Dekkers & Dekker, 2020
- Genus Miohinia Nordsieck, 1972 accepted as Nassarius Duméril, 1805
- Genus Mirua Marwick, 1931 † accepted as Tritia Risso, 1826
- Genus Monoceros Fleming, 1828
- Genus Moulinsia Tournouer, 1874 accepted as Demoulia Gray, 1838
- Genus Nana Schumacher, 1817 accepted as Cyclope Risso, 1826
- Genus Nanarius Woodring, 1964 † accepted as Nassarius Duméril, 1805
- Genus Nanina Risso, 1826 accepted as Cyclope Risso, 1826
- Genus Nannia Philippi, 1844 accepted as Cyclope Risso, 1826
- Genus Nasa Fleming, 1828 accepted as Nassarius Duméril, 1805
- Genus Nassa Lamarck, 1799 accepted as Nassarius Duméril, 1805
- Genus Nassaria Link, 1807
- Genus Nassaria Rafinesque, 1815
- Genus Nassarium
- Genus Nassarius Duméril, 1805
- Genus Nasseburna de Gregorio, 1890 † accepted as Sphaeronassa Locard, 1886
- Genus Nassodonta H. Adams, 1867
- Genus Naytia H. Adams & A. Adams, 1853
- Genus Naytiopsis Thiele, 1929 accepted as Tritia Risso, 1826
- Genus Neoteron Pilsbry & Lowe, 1932
- Genus Neritula Herrmannsen, 1852
- Genus Neritula H. Adams & A. Adams, 1853 accepted as Cyclope Risso, 1826
- Genus Niotha H. Adams & A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Niothia Brazier, 1877 accepted as Nassarius Duméril, 1805
- Genus Northia Gray, 1847
- Genus Oligohalinophila Neiber & Glaubrecht, 2019
- Genus Pallacera Woodring, 1964 accepted as Nassarius Duméril, 1805
- Genus Panormella O. G. Costa, 1840 accepted as Cyclope Risso, 1826
- Genus Paranassa Conrad, 1868 accepted as Ilyanassa Stimpson, 1865
- Genus Parcanassa Iredale, 1936 accepted as Tritia Risso, 1826
- Genus Parviphos Sarasua, 1984 accepted as Antillophos Woodring, 1928
- Genus Philindophos Shuto, 1969 †
- Genus Phos Montfort, 1810
- Genus Phrontia Paetel, 1875 accepted as Phrontis H. Adams & A. Adams, 1853
- Genus Phrontis H. Adams & A. Adams, 1853
- Genus Plicarcularia Thiele, 1929 accepted as Nassarius Duméril, 1805
- Genus Profundinassa Thiele, 1929 accepted as Nassarius Duméril, 1805
- Genus Proneritula Thiele, 1929 accepted as Tritia Risso, 1826
- Genus Pseudocominella Nuttall & J. Cooper, 1973 †
- Genus Pseudostrombus Mörch, 1852 accepted as Bullia Gray, 1833
- Genus Psilarius Woodring, 1964 † accepted as Nassarius Duméril, 1805
- Genus Pygmaeonassa Annandale, 1924 accepted as Nassarius Duméril, 1805
- Genus Quadrasia Crosse, 1886 accepted as Clea H. Adams & A. Adams, 1855
- Genus Radulphus Iredale, 1924 accepted as Cyllene Gray, 1834
- Genus Retiarcularia Shuto, 1969 accepted as Reticarcularia Shuto, 1969
- Genus Reticarcularia Shuto, 1969 accepted as Nassarius Duméril, 1805
- Genus Reticunassa Iredale, 1936 †
- Genus Rhipophos Woodring, 1964 †
- Genus Scabronassa Peile, 1939 accepted as Nassarius Duméril, 1805
- Genus Scalanassa Petuch, 1994 †
- Genus Schizopyga Conrad, 1856 † accepted as Caesia H. Adams & A. Adams, 1853
- Genus Schizopyge Cossmann, 1901 †
- Genus Soyonassa Okutani, 1964
- Genus Sphaeronassa Locard, 1886 accepted as Nassarius Duméril, 1805
- Genus Streptorhega Bronn, 1856 accepted as Demoulia Gray, 1838
- Genus Strongylocera Mörch, 1852 † accepted as Phos Montfort, 1810
- Genus Sudonassarius Stilwell & Zinsmeister, 1992 †
- Genus Tarazeuxis Iredale, 1936 accepted as Nassarius Duméril, 1805
- Genus Tavaniotha Iredale, 1936 accepted as Nassarius Duméril, 1805
- Genus Tavanothia Iredale, 1936 accepted as Nassarius Duméril, 1805
- Genus Telasa Tapparone-Canefri, 1879 accepted as Telasco H. Adams & A. Adams, 1853
- Genus Telasco H. Adams & A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Thanetinassa Nuttall & J. Cooper, 1973 †
- Genus Tomlinia Peile, 1937
- Genus Trajana Gardner, 1948 †
- Genus Tritea Therese, 1900
- Genus Tritia Risso, 1826
- Genus Tritia A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Tritiaria Conrad, 1865 †
- Genus Tritonella A. Adams, 1852 accepted as Nassarius Duméril, 1805
- Genus Usita accepted as Nassarius Duméril, 1805
- Genus Utiza Watson, 1886 accepted as Uzita H. Adams & A. Adams, 1853
- Genus Uzita H. Adams & A. Adams, 1853 accepted as Tritia Risso, 1826
- Genus Varicinassa Habe, 1946 accepted as Nassarius Duméril, 1805
- Genus Venassa Martens, 1881 accepted as Nassarius Duméril, 1805
- Genus Whitecliffia Nuttall & J. Cooper, 1973 †
- Genus Zaphon Adams, 1858 accepted as Caesia H. Adams & A. Adams, 1853
- Genus Zenais Tapparone-Canefri, 1879 accepted as Zeuxis H. Adams & A. Adams, 1853
- Genus Zeuscis Coen, 1933 accepted as Zeuxis H. Adams & A. Adams, 1853
- Genus Zeuxis H. Adams & A. Adams, 1853 accepted as Nassarius Duméril, 1805
- Genus Zeuzis Ayres, 1916 accepted as Zeuxis H. Adams & A. Adams, 1853
- 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
- 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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