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
- Genus Aegeofusinus Russo, 2017
- Genus Africofusus Vermeij & Snyder, 2018
- Genus Africolaria Snyder, Vermeij & Lyons, 2012
- Genus Africolithes Eames, 1957 †
- Genus Amiantofusus Fraussen, Kantor & Hadorn, 2007
- Genus Anguistofusus Vermeij & Snyder, 2018 †
- Genus Angulofusus Fedosov & Kantor, 2012
- Genus Anomalofusus Wade, 1916 †
- Genus Apertifusus Vermeij & Snyder, 2018
- Genus Aptixis Lukovic, 1926 † accepted as Aptyxis Troschel, 1868
- Genus Aptycholathyrus Cossmann & Pissarro, 1905 †
- Genus Aptysis Bucquoy & Dautzenberg, 1882 † accepted as Aptyxis Troschel, 1868
- Genus Aptyxis Troschel, 1868
- Genus Apyxis Dollfus, 1902 † accepted as Aptyxis Troschel, 1868
- Genus Aquilofusus Kautsky, 1925 †
- Genus Araiofusus Callomon & Snyder, 2018
- Genus Ariefusus Vermeij & Snyder, 2018
- Genus Aristofusus Vermeij & Snyder, 2018
- Genus Ascolathyrus Cossmann, 1901 † accepted as Ascolatirus Bellardi, 1884 †
- Genus Ascolatirus Bellardi, 1884 † accepted as Peristernia Mörch, 1852
- Genus Aurantilaria Snyder, Vermeij & Lyons, 2012
- Genus Australaria Snyder, Vermeij & Lyons, 2012
- Genus Austrolithes Finlay, 1931 † accepted as Clavilithes Swainson, 1840 †
- Genus Barbarofusus Grabau & Shimer, 1909 accepted as Fusinus Rafinesque, 1815
- Genus Bellifusus Stephenson, 1941 †
- Genus Benimakia Habe, 1958
- Genus Boltenella Wade, 1917 †
- Genus Brocchitas Finlay, 1927 †
- Genus Brucia Cossmann, 1920 † accepted as Haplovoluta Wade, 1918 †
- Genus Buccinofusus Conrad, 1868 † accepted as Conradconfusus Snyder, 2002 †
- Genus Buccinofusus Conrad, 1866 accepted as Conradconfusus Snyder, 2002 †
- Genus Bulbifusus Conrad, 1865 † accepted as Mazzalina Conrad, 1860 †
- Genus Bullockus Lyons & Snyder, 2008
- Species Bullockus guesti Lyons & Snyder, 2008
- Species Bullockus pseudovarai Lyons & Snyder, 2008
- Genus Buscula Simroth in Bronn, 1907
- Genus Calkota Squires & Saul, 2003 †
- Genus Callifusus Vermeij & Snyder, 2018
- Genus Carinofusus Ceulemans, Landau & Van Dingenen, 2014 †
- Genus Chasca Clench & Aguayo, 1941 accepted as Chascax Watson, 1873
- Genus Chascax Watson, 1873 accepted as Hemipolygona Rovereto, 1899
- Genus Chiralithes Olsson, 1930 † accepted as Clavilithes Swainson, 1840 †
- Genus Chryseofusus Hadorn & Fraussen, 2003
- Genus Cinctura Hollister, 1957
- Genus Cirtulus Schaufuss, 1869 accepted as Cyrtulus Hinds, 1843
- Genus Clanella de Gregorio, 1885 accepted as Clavella Swainson, 1835
- Genus Clavalithes Swainson, 1840 accepted as Clavilithes Swainson, 1840 †
- Genus Clavelithes Conrad, 1855 accepted as Clavilithes Swainson, 1840 †
- Genus Clavella Swainson, 1835 accepted as Clavilithes Swainson, 1840 †
- Genus Clavellithes Gray, 1847 accepted as Clavilithes Swainson, 1840 †
- Genus Clavellofusus Grabau, 1904 †
- Genus Clavilithes Swainson, 1840 †
- Genus Conradconfusus Snyder, 2002 †
- Genus Cosmolites Dollfus, 1905 † accepted as Cosmolithes Grabau, 1904 †
- Genus Cosmolithes Grabau, 1904 †
- Genus Crassibougia Stahlschmidt & Fraussen, 2012
- Genus Cryptoneolatirus Harzhauser, Landau & Vermeij, 2024 †
- Genus Cryptorhytis Meek, 1876 †
- Genus Cymatium Link, 1807 accepted as Latirus Montfort, 1810
- Genus Cyrtulus Hinds, 1843 accepted as Fusinus Rafinesque, 1815
- Genus Dennantia Tate, 1888 †
- Genus Dentifusus Vermeij & Rosenberg, 2003
- Genus Dolicholathyrus Cossmann, 1901 † accepted as Dolicholatirus Bellardi, 1884
- Genus Dolicholatirus Bellardi, 1884
- Genus Dolicholatyrus Douvillé & O'Gorman, 1930 † accepted as Dolicholatirus Bellardi, 1884
- Genus Dolycholathyrus Cossmann, 1902 † accepted as Dolicholatirus Bellardi, 1884
- Genus Drilliovoluta Cossmann, 1925 †
- Genus Drilluta Wade, 1916 †
- Genus Enigmofusus Vermeij & Snyder, 2018
- Genus Eofusus Vermeij & Snyder, 2018 †
- Genus Eolatirus Bellardi in Bellardi & Sacco, 1886 †
- Genus Eolatyrus Sacco, 1890 †
- Genus Eurolatirus Harzhauser, Landau & Vermeij, 2024 †
- Genus Euthriofusus Cossmann, 1901 †
- Genus Eutriofusus Dollfuss, 1905
- Genus Exilifusus Conrad, 1865 †
- Genus Exilifusus Gabb, 1877 † accepted as Fusinus Rafinesque, 1815
- Genus Falsicolus Finlay, 1930 †
- Genus Fasciodaria Giebel, 1852 † accepted as Fasciolaria Lamarck, 1799
- Genus Fasciolaria Lamarck, 1799
- Genus Fascioloria Mayer, 1872 † accepted as Fasciolaria Lamarck, 1799
- Genus Filifusus Snyder, Vermeij & Lyons, 2012
- Genus Fractolatirus Iredale, 1936
- Genus Fraudifusinus Harzhauser, Landau & Vermeij, 2024 †
- Genus Fredenia Cadée & A. W. Janssen, 1994 † accepted as Latirulus Cossmann, 1889
- Genus Fuscus accepted as Fusinus Rafinesque, 1815
- Genus Fusilaria Snyder, 2013
- Genus Fusilatirus McGinty, 1955 accepted as Dolicholatirus Bellardi, 1884
- Genus Fusinius Nelson, 1925 † accepted as Fusinus Rafinesque, 1815
- Genus Fusinus Rafinesque, 1815
- Genus Fusolatirus McGinty, 1955
- Genus Fusolatirus Kuroda & Habe in Kuroda, Habe & Oyama, 1971
- Genus Fusos Sowerby, 1903 accepted as Fusinus Rafinesque, 1815
- Genus Fusus Lamarck, 1799 accepted as Fusinus Rafinesque, 1815
- Genus Fusus Bruguière, 1789 accepted as Fusinus Rafinesque, 1815
- Genus Fusus Röding, 1798
- Genus Gemmocolus Maxwell, 1992 †
- Genus Goniofusus Vermeij & Snyder, 2018
- Genus Gracilapurpura Fulton, 1922 accepted as Gracilipurpura Jousseaume, 1880
- Genus Gracilipurpura Jousseaume, 1880
- Genus Gracillipurpura Jousseaume, 1881 accepted as Gracilipurpura Jousseaume, 1880
- Genus Gracilopurpura Fulton, 1922 accepted as Gracilipurpura Jousseaume, 1880
- Genus Granolaria Snyder, Vermeij & Lyons, 2012
- Genus Granulifusus Kuroda & Habe, 1954
- Genus Haplovoluta Wade, 1918 †
- Genus Harasewychia Petuch, 1987
- Genus Harfordia Dall, 1921 accepted as Fusinus Rafinesque, 1815
- Genus Heilprinia Grabau, 1904 accepted as Fusinus Rafinesque, 1815
- Genus Helolithus Agassiz, 1846 †
- Genus Hemipolygona Rovereto, 1899
- Genus Hercorhynchus Cossmann, 1901 †
- Genus Hercorhyncus Conrad, 1869 †
- Genus Hyllus Wade, 1917 † accepted as Parafusus Wade, 1918 †
- Genus Iaeranea Rafinesque, 1815 † accepted as Fasciolaria Lamarck, 1799
- Genus Indolithes Dharma, 2024 †
- Genus Iscafusus Kollmann, 2005 †
- Genus Jeranea Herrmannsen, 1852 † accepted as Fasciolaria Lamarck, 1799
- Genus Kilburnia Snyder, Vermeij & Lyons, 2012
- Genus Lagena Schumacher, 1817 accepted as Latirolagena Harris, 1897
- Genus Lagenor Tapparoni-Canefri, 1879 accepted as Latirolagena Harris, 1897
- Genus Lamarckofusus Vermeij & Lozouet, 2012 †
- Genus Lamellilatirus Lyons & Snyder, 2008
- Genus Lathires Bowdich, 1822 accepted as Latirus Montfort, 1810
- Genus Lathirus Gray, 1840 accepted as Latirus Montfort, 1810
- Genus Lathyrolagena Cossmann, 1901 accepted as Latirolagena Harris, 1897
- Genus Lathyropsis Oostingh, 1939 †
- Genus Lathyrulus Cossmann, 1901 † accepted as Latirulus Cossmann, 1889
- Genus Lathyrus Schinz in Cuvier, 1825 accepted as Latirus Montfort, 1810
- Genus Latirofusus Cossmann, 1889 accepted as Dolicholatirus Bellardi, 1884
- Genus Latirogona Laws, 1944 †
- Genus Latirolagena Harris, 1897
- Genus Latirulus Cossmann, 1889
- Genus Latirus Montfort, 1810
- Genus Lattirus Paetel, 1875 accepted as Latirus Montfort, 1810
- Genus Latyrus Carpenter, 1857 accepted as Latirus Montfort, 1810
- Genus Lepidocolus Maxwell, 1992 †
- Genus Leucozona Bellardi, 1886 accepted as Leucozonia Gray, 1847
- Genus Leucozonalis Risbec, 1932 accepted as Leucozonia Gray, 1847
- Genus Leucozonia Gray, 1847
- Genus Levarlatirus Garvie, 2013 † accepted as Latirus Montfort, 1810
- Genus Lightbournus Lyons & Snyder, 2008
- Genus Liochlamys Dall, 1889 †
- Genus Liracolus Maxwell, 1992 † accepted as Falsicolus Finlay, 1930 †
- Genus Lirofusus Conrad, 1865 †
- Genus Lirosoma Conrad, 1862 †
- Genus Lirostoma Dollfus, 1902 † accepted as Lirosoma Conrad, 1862 †
- Genus Lugubrilaria Snyder, Vermeij & Lyons, 2012
- Genus Lyonsifusus Vermeij & Snyder, 2018
- Genus Lyrofusus Cossmann, 1896 † accepted as Lirofusus Conrad, 1865 †
- Genus Lyrosoma Conrad, 1862 † accepted as Lirosoma Conrad, 1862 †
- Genus Mancorus Olsson, 1931 †
- Genus Mariafusus Petuch, 1988 †
- Genus Marmorofusus Snyder & Lyons, 2014
- Genus Mazzalina Conrad, 1860 †
- Genus Micasarcina Squires & Saul, 2003 †
- Genus Microcolus Cotton & Godfrey, 1932
- Genus Microfulgur Finlay & Marwick, 1937 †
- Genus Mylecoma Squires & Saul, 2003 †
- Genus Neolathyrus Cossmann, 1901 † accepted as Neolatirus Bellardi, 1884 †
- Genus Neolatirus Bellardi, 1884 †
- Genus Nodolatirus Bouchet & Snyder, 2013
- Genus Nodopelagia Hedley, 1915
- Genus Odontofusus Whitfield, 1892 †
- Genus Okutanius Kantor, Fedosov, Snyder & Bouchet, 2018
- Genus Ollaphon Iredale, 1929
- Genus Opeatostoma Berry, 1958
- Genus Ornithopsis Cossmann, 1925 † accepted as Ornopsis Wade, 1916 †
- Genus Ornopsis Wade, 1916 †
- Genus Palaeopsephaea Riedel, 1932 †
- Genus Parafusus Wade, 1918 †
- Genus Paralegena Cossmann, 1918 accepted as Paralagena Dall, 1904
- Genus Parvofusus Tabanelli, 2014 †
- Genus Peistochilus Tryon, 1883 † accepted as Piestochilus Meek, 1864 †
- Genus Peristerina Yen, 1935 accepted as Peristernia Mörch, 1852
- Genus Peristernia Mörch, 1852
- Genus Perse B.L. Clark, 1918 †
- Genus Persternia Nomura, 1935 accepted as Peristernia Mörch, 1852
- Genus Peruficus Olsson, 1929 †
- Genus Perulithes Olsson, 1930 † accepted as Clavilithes Swainson, 1840 †
- Genus Piestocheilus Conrad, 1866 † accepted as Piestochilus Meek, 1864 †
- Genus Piestochilus Meek, 1864 †
- Genus Piestschilus Whitfield, 1872 † accepted as Piestochilus Meek, 1864 †
- Genus Pinus Perry, 1811 † accepted as Clavalithes Swainson, 1840
- Genus Plectocion Stewart, 1927 †
- Genus Pleia Finlay, 1930 †
- Genus Plesiolatirus Bellardi in Bellardi & Sacco, 1886 †
- Genus Pleurophoca Crosse, 1884 accepted as Pleuroploca P. Fischer, 1884
- Genus Pleuroplaca accepted as Pleuroploca P. Fischer, 1884
- Genus Pleuroploca P. Fischer, 1884
- Genus Plicatella Swainson, 1837
- Genus Pliculofusus Snyder, Vermeij & Lyons, 2012 †
- Genus Polygona Schumacher, 1817
- Genus Polygonum Blainville, 1826
- Genus Priscofasus Douvillé, 1924 † accepted as Priscofusus Conrad, 1865 †
- Genus Priscofusus Conrad, 1865 †
- Genus Profusinus Bandel, 2000 †
- Genus Propefusus Iredale, 1924 accepted as Fusinus Rafinesque, 1815
- Genus Psammostoma Vermeij & Snyder, 2002 †
- Genus Pseudaptyxis Petuch, 1988 †
- Genus Pseudofusus Monterosato, 1884 accepted as Fusinus Rafinesque, 1815
- Genus Pseudolathyrus Cossmann, 1901 accepted as Pseudolatirus Bellardi, 1884
- Genus Pseudolatirus Bellardi, 1884
- Genus Pseudolatirus Cossmann, 1889 † accepted as Streptolathyrus Cossmann, 1901 †
- Genus Pullincola de Gregorio, 1894 †
- Genus Pustulatirus Vermeij & Snyder, 2006
- Genus Remera Stephenson, 1941 †
- Genus Rhopalites Cossmann, 1904 †
- Genus Rhopalithes Grabau, 1904 †
- Genus Rhopalolithes Grabau, 1904
- Genus Rocalaria del Rio, 2012 †
- Genus Ruscula Casey, 1904 †
- Genus Saginafusus Iredale, 1931
- Genus Scobina Wade, 1917 † accepted as Haplovoluta Wade, 1918 †
- Genus Serrifusus Meek, 1876 †
- Genus Simplicifusus Kira, 1972 accepted as Granulifusus Kuroda & Habe, 1954
- Genus Sinistralia H. Adams & A. Adams, 1853 accepted as Fusinus Rafinesque, 1815
- Genus Skyles Saul & Popenoe, 1993 †
- Genus Snyderifusus Harzhauser, Landau & Vermeij, 2024 †
- Genus Solutofusus Pritchard, 1898 †
- Genus Spirilla Sowerby, 1842 †
- Genus Spirillus Schlüter, 1838
- Genus Steptochetus Finlay, 1924 † accepted as Streptochetus Cossmann, 1889 †
- Genus Streptocarina Hinsch, 1977 † accepted as Latirulus Cossmann, 1889
- Genus Streptochetus Cossmann, 1889 †
- Genus Streptodictyon Tembrock, 1961 † accepted as Latirulus Cossmann, 1889
- Genus Streptolathyrus Cossmann, 1901 † accepted as Latirulus Cossmann, 1889
- Genus Streptopelma Cossmann, 1901 †
- Genus Tarantinaea Monterosato, 1917
- Genus Taron Hutton, 1882
- Genus Tectifusus Tate, 1893 †
- Genus Teralatirus Coomans, 1965
- Genus Terebraspira Conrad, 1862 †
- Genus Terebrispira Meek, 1876 †
- Genus Trichifusus Bandel, 2000 †
- Genus Triplofusus Olsson & Harbison, 1953
- Genus Trophonofusus Kuroda & Habe in Kuroda, Habe & Oyama, 1971
- Genus Turrilatirus Vermeij & M. A. Snyder, 2006
- Genus Turrispira Conrad, 1866 † accepted as Clavilithes Swainson, 1840 †
- Genus Tusus Fabricius, 1823 accepted as Cumia Bivona-Bernardi, 1838
- Genus Vermeijius Kantor, Fedosov, Snyder & Bouchet, 2018
- Genus Viridifusus Snyder, Vermeij & Lyons, 2012
- Genus Wadia Cossmann, 1920 † accepted as Parafusus Wade, 1918 †
- Genus Whitneyella Stewart, 1927 †
- Genus Woodsella Wade, 1926 †
- Genus Xenofusinus Harzhauser, Landau & Vermeij, 2024 †
- 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
- 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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