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
- Family Acteonellidae Gill, 1871 †
- Family Acteonidae d'Orbigny, 1835
- Family Amathinidae Ponder, 1987
- Family Ampezzanildidae Bandel, 1995 †
- Family Amphitomariidae Bandel, 1994 †
- Family Anoptychiidae Bandel, 1995 †
- Family Aplustridae Gray, 1847
- Family Architectonicidae J.E. Gray in M.E. Gray, 1850
- Family Bullinidae Lamarck, 1801
- Family Cassianaxidae †
- Family Cassianebalidae Bandel, 1996 †
- Family Ceritellidae Wenz, 1938 †
- Family Cimidae Warén, 1993
- Family Cornirostridae Ponder, 1990
- Family Cylindrobullinidae Wenz, 1938 †
- Family Dolomitellidae †
- Family Donaldinidae Bandel, 1994 † accepted as Streptacididae Knight, 1931 †
- Family Ebalidae Warén, 1995 accepted as Murchisonellidae Casey, 1904
- Family Glacidorbidae Ponder, 1986
- Family Gordenellidae †
- Family Heteroneritidae †
- Family Heterostrophia (awaiting allocation)
- Family Heterosubulitidae Bandel, 2002 †
- Family Hyalogyrinidae Warén & Bouchet, 1993
- Family Hydatinidae Pilsbry, 1895 accepted as Aplustridae Gray, 1847
- Family Itieriidae Cossmann, 1896 † accepted as Acteonellidae Gill, 1871 †
- Family Kuskokwimiidae Frýda & Blodgett, 2001 †
- Family Mathildidae Dall, 1889
- Family Misurinellidae Bandel, 1994 †
- Family Murchisonellidae Casey, 1904
- Family Nerineidae Zittel, 1873 †
- Family Nerinellidae Pchelintsev, 1960 †
- Family Odostomiidae Pelseneer, 1928 accepted as Pyramidellidae Gray, 1840
- Family Omalogyridae G.O. Sars, 1878
- Family Orbitestellidae Iredale, 1917
- Family Provalvatidae †
- Family Pyramidellidae Gray, 1840
- Genus Aartsenia Warén, 1991
- Genus Aciculina Deshayes, 1861 † accepted as Eulimella Forbes & MacAndrew, 1846
- Genus Actaeopyramis P. Fischer, 1885 accepted as Monotygma G. B. Sowerby II, 1839
- Genus Actaeopyramus Vaught, 1989 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Acteopyramis Brusina, 1896 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Afroturbonilla Peñas, Rolán & Schander, 1999
- Genus Agatha A. Adams, 1860
- Genus Amamimormula Kuroda, 1928 accepted as Turbonilla Risso, 1826
- Genus Amathis A. Adams, 1861 accepted as Agatha A. Adams, 1860
- Genus Amaura Møller, 1842 accepted as Aartsenia Warén, 1991
- Genus Amoura Gray, 1847 accepted as Amaura Møller, 1842
- Genus Amoura Folin in Folin & Périer, 1873
- Genus Angustispira Pelseneer, 1912
- Genus Anisocycla Monterosato, 1880 accepted as Eulimella Forbes & MacAndrew, 1846
- Genus Anisocycla Cossmann, 1888 accepted as Belonidium Cossmann, 1892
- Genus Aphalista Laseron, 1959 accepted as Otopleura P. Fischer, 1885
- Genus Asmunda Dall & Bartsch, 1904
- Genus Auriculina Gray, 1847 accepted as Ondina de Folin, 1870
- Genus Auristomia Monterosato, 1884
- Genus Babelis Melvill, 1910 accepted as Babella Dall & Bartsch, 1906
- Genus Babella Dall & Bartsch, 1906
- Genus Bacteridiella Saurin, 1959
- Genus Bacteridium Thiele, 1929
- Genus Baldra Dall & Bartsch, 1904
- Genus Bartrumella Laws, 1940 †
- Genus Bartschella Iredale, 1916
- Genus Baudonia Bayan, 1873 † accepted as Eulimella Forbes & MacAndrew, 1846
- Genus Belonidium Cossmann, 1892
- Genus Besla Dall & Bartsch, 1904
- Genus Boonea Robertson, 1978
- Genus Bouchetmella Peñas & Rolán, 2016
- Genus Brachystomia Monterosato, 1884
- Genus Branchyostomia accepted as Brachystomia Monterosato, 1884
- Genus Bulicingulina Robba, 2013 †
- Genus Bulimoscilla Robba, 2013
- Genus Burkilla Schander, Aartsen, Corgan, 1999 accepted as Burkillia Iredale, 1915
- Genus Burkillia Iredale, 1915 accepted as Tragula Monterosato, 1884
- Genus Callolongchaeus Dall, 1903 † accepted as Longchaeus Mörch, 1875
- Genus Callongchaeus Cossmann, 1921 accepted as Callolongchaeus Dall, 1903 †
- Genus Carasia Jekelius, 1944 †
- Genus Careliopsis Mörch, 1875
- Genus Charilda Iredale, 1929
- Genus Chemitzia Cossmann, 1925 accepted as Chemnitzia d'Orbigny, 1840
- Genus Chemnitzia d'Orbigny, 1840
- Genus Chenmitzia Simanelli, 1884 accepted as Chemnitzia d'Orbigny, 1840
- Genus Chrysalida Mörch, 1875 accepted as Chrysallida Carpenter, 1856
- Genus Chrysallida Carpenter, 1856
- Genus Chryssalida Bush, 1909 accepted as Chrysallida Carpenter, 1856
- Genus Cimaria Høisæter, 2012
- Genus Cinctigua Schander, Aartsen & Corgan, 1999 accepted as Odostomia Fleming, 1813
- Genus Cinctiuga Laseron, 1951
- Genus Cingulata Laseron, 1959
- Genus Cingulina A. Adams, 1860
- Genus Coemansia Briart & Cornet, 1873 †
- Genus Colpostomia Cossmann, 1921 †
- Genus Colsyrnola Iredale, 1929
- Genus Contraxiala Laseron, 1956
- Genus Cossmannica Dall & Bartsch, 1904
- Species Cossmannica aciculata (A. Adams, 1855)
- Species Cossmannica bancoensis Saurin, 1959
- Species Cossmannica behainei Saurin, 1959
- Species Cossmannica catinati Saurin, 1959
- Species Cossmannica champaensis Saurin, 1958
- Species Cossmannica discreta Saurin, 1959
- Species Cossmannica exesa Laseron, 1959
- Species Cossmannica jacksonensis (Dall & Bartsch, 1906)
- Species Cossmannica subcarina Laseron, 1959
- Genus Costabieta Laseron, 1956
- Genus Costosyrnola Laws, 1937 †
- Genus Cremula Iredale, 1915
- Genus Crenatodostomia Nomura, 1937
- Genus Creonella Wade, 1917 †
- Genus Cricolophus Weisbord, 1962 †
- Genus Cryptopolyptychia Gougerot, 1968 †
- Genus Crysallida Bartsch, 1928 accepted as Chrysallida Carpenter, 1856
- Genus Cyclodontostomia Cossmann, 1921 accepted as Cyclodostomia Sacco, 1892
- Genus Cyclodostomia Sacco, 1892 accepted as Odostomia Fleming, 1813
- Genus Cyclostremella Bush, 1897
- Genus Cyclostromella accepted as Cyclostremella Bush, 1897
- Genus Cylindriturbonilla Nordsieck, 1972 accepted as Turbonilla Risso, 1826
- Genus Cyrtoturbonilla F. Nordsieck, 1972 accepted as Turbonilla Risso, 1826
- Genus Derjuginella Habe, 1958
- Genus Digoniaxis Jousseaume, 1889
- Genus Diptychus Cossmann, 1888
- Genus Discobasis Cossmann, 1888 †
- Genus Doliella Monterosato, 1880
- Genus Dunkeria Carpenter, 1857 accepted as Turbonilla Risso, 1826
- Genus Ebala Leach in Gray, 1847
- Genus Ebaliea Paetel, 1875 accepted as Ebala Leach in Gray, 1847
- Genus Ebalina Thiele, 1929
- Genus Egila Dall & Bartsch, 1904
- Genus Egilia accepted as Egila Dall & Bartsch, 1904
- Genus Egilina Dall & Bartsch, 1906
- Genus Eglia Cossmann, 1921 † accepted as Egila Dall & Bartsch, 1904
- Genus Elodia Folin in Folin & Périer, 1872 accepted as Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Elodia de Folin, 1870 accepted as Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Elodiamea de Folin, 1886 accepted as Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Elusa A. Adams, 1861 accepted as Tropaeas Dall & Bartsch, 1904
- Genus Erilimella Forbes & McAndrew, 1846
- Genus Eulimastoma Bartsch, 1916
- Genus Eulimella Forbes & MacAndrew, 1846
- Genus Eulimella Jeffreys, 1847
- Genus Eulimotiberia Nomura, 1939 †
- Genus Eulinella Monterosato, 1891
- Genus Euparthenia Thiele, 1931
- Genus Eupyrgulina Melvill, 1910
- Genus Eurathea Laseron, 1959
- Genus Eustomia Cossmann, 1921 †
- Genus Euturbonilla Semper, 1862
- Genus Evalea A. Adams, 1860
- Genus Evaletta Pilsbry, 1918
- Genus Evalia Simroth in Bronn, 1907 accepted as Evalea A. Adams, 1860
- Genus Evalina Dall & Bartsch, 1904
- Genus Evelynella Laws, 1940 † accepted as Megastomia Monterosato, 1884
- Genus Exesilla Laseron, 1959
- Genus Faluniella Cossmann, 1921 †
- Genus Fargoa Bartsch, 1955
- Genus Finlayola Laws, 1937 accepted as Syrnola A. Adams, 1860
- Genus Folinella Dall & Bartsch, 1904
- Genus Funicularia Monterosato, 1884 accepted as Ividella Dall & Bartsch, 1909
- Genus Gispyrella Laws, 1937 †
- Genus Glabrondina Sacco, 1892
- Genus Globostomia Hoffman, van Heugten & Lavaleye, 2009
- Genus Goniodostomia Pilsbry & Johnson, 1917 †
- Genus Graciliturbonilla Nordsieck, 1972 † accepted as Turbonilla Risso, 1826
- Genus Gumina Finlay, 1928
- Genus Gurmatia Dance & Eames, 1966 †
- Genus Haldra Dall & Bartsch, 1904
- Genus Hamarilla Eames & Wilkins, 1957
- Genus Heida Dall, 1903 accepted as Syrnola A. Adams, 1860
- Genus Herewardia Iredale, 1935
- Genus Herviera Melvill & Standen, 1899
- Genus Hinemoa Oliver, 1915
- Genus Hoonsyrnola Nomura, 1938 accepted as Puposyrnola Cossmann, 1921
- Genus Houbricka Wise, 1996
- Genus Houbrickia Schander, Aartsen & Corgan, 1999 accepted as Houbricka Wise, 1996
- Genus Instarella Laseron, 1959 accepted as Eulimella Forbes & MacAndrew, 1846
- Genus Iolaea A. Adams, 1867
- Genus Iole A. Adams, 1860 † accepted as Iolaea A. Adams, 1867
- Genus Iolina Baily, 1948 † accepted as Iolaea A. Adams, 1867
- Genus Iphiana Dall & Bartsch, 1904
- Genus Ivara Dall & Bartsch in Arnold, 1903
- Genus Ividella Dall & Bartsch, 1909
- Genus Ividia Dall & Bartsch, 1904
- Genus Ividiella Monterosato, 1917 accepted as Ividella Dall & Bartsch, 1909
- Genus Jaminea de Folin, 1870 accepted as Pseudoscilla Boettger, 1901
- Genus Jaminina Dall, 1909
- Genus Jordaniella Chaster, 1898
- Genus Jordanula Chaster, 1901 accepted as Jordaniella Chaster, 1898
- Genus Kejdonia Mifsud, 1999
- Genus Kleinella A. Adams, 1860
- Genus Kongsrudia Lygre & Schander, 2010
- Genus Kunopia Laseron, 1959
- Genus Lacrimiforma Sohl, 1963 †
- Genus Laeviselica Gougerot & le Renard, 1977 †
- Genus Lafolletteia Landau & Micali, 2021 †
- Genus Lancea Pease, 1868 accepted as Turbonilla Risso, 1826
- Genus Lancella Dall & Bartsch, 1904 accepted as Turbonilla Risso, 1826
- Genus Latavia Laseron, 1951
- Genus Levipyrgulina Laws, 1941 †
- Genus Lia Folin in Folin & Périer, 1872 accepted as Liamorpha Pilsbry, 1898
- Genus Lia de Folin, 1873 accepted as Liamorpha Pilsbry, 1898
- Genus Liamorpha Pilsbry, 1898
- Genus Linopyrga Laws, 1941
- Genus Liomorpha Pilsbry, 1898 accepted as Liamorpha Pilsbry, 1898
- Genus Liostomia G.O. Sars, 1878
- Genus Liotropica Laseron, 1958 accepted as Moerchia A. Adams, 1860
- Genus Locklinia Bartsch, 1955 †
- Genus Lonchaeus Böttger, 1896 accepted as Longchaeus Mörch, 1875
- Genus Longchaeus Mörch, 1875
- Genus Loxoptyxis Cossmann, 1888 †
- Genus Lysacme Dall & Bartsch, 1904
- Genus Macrodontostomia Cossmann, 1921 † accepted as Macrodostomia Sacco, 1892 †
- Genus Macrodostomia Sacco, 1892 †
- Genus Magniturbonilla Nordsieck, 1972
- Genus Marginodostomia Nomura, 1936
- Genus Megastomia Monterosato, 1884
- Genus Menesthella Nomura, 1939
- Genus Menestho Möller, 1842
- Genus Menesto Crosse, 1864 accepted as Menestho Möller, 1842
- Genus Menetho Gray, 1847 accepted as Menestho Möller, 1842
- Genus Middiella Vaught, 1989 accepted as Miraldiella Cossmann, 1921 †
- Genus Milda Dall & Bartsch, 1904
- Genus Miralda A. Adams, 1863
- Genus Miraldella Bartsch, 1955 † accepted as Egilina Dall & Bartsch, 1906
- Genus Miraldiella Cossmann, 1921 †
- Genus Mirobeliscus Zittel, 1882 †
- Genus Moerchia A. Adams, 1860
- Genus Moerchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860
- Genus Moerchinella Thiele, 1931 accepted as Moerchia A. Adams, 1860
- Genus Moesia Jekelius, 1944 †
- Genus Monatigma Swainson, 1840 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Monophygma Carus, 1889 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Monoptaxis Jeffreys, 1867
- Genus Monoptygma Agassiz, 1846 † accepted as Monotigma G. B. Sowerby II, 1839
- Genus Monotigma G. B. Sowerby II, 1839 accepted as Monotygma G. B. Sowerby II, 1839
- Genus Monotygma Gray, 1840 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Monotygma Gray, 1847 accepted as Monotigma G. B. Sowerby II, 1839
- Genus Monotygma G. B. Sowerby II, 1839
- Genus Morchia Adams, 1860 accepted as Moerchia A. Adams, 1860
- Genus Mörchia Adams, 1860 accepted as Moerchia A. Adams, 1860
- Genus Morchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860
- Genus Mörchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860
- Genus Morchinella Thiele, 1931 accepted as Moerchinella Thiele, 1931
- Genus Mörchinella Thiele, 1931 accepted as Moerchia A. Adams, 1860
- Genus Mormula A. Adams, 1863
- Genus Mormulasta Laseron, 1959
- Genus Mormurella Nomura, 1939 †
- Genus Morrisonietta Brandt, 1968 †
- Genus Mulderia Landau & Micali, 2021 †
- Genus Mumiola A. Adams, 1863
- Genus Myxa Hedley, 1903
- Genus Nesiodostomia Pilsbry, 1918
- Genus Nisipyrgiscus Robba, 2013
- Genus Nisiturris Dall & Bartsch, 1906
- Genus Nisostomia Cossmann, 1921
- Genus Nodostoma Wood, 1882 †
- Genus Noemia de Folin, 1870 accepted as Noemiamea de Folin, 1886
- Genus Noemia de Folin, 1872 accepted as Noemiamea de Folin, 1886
- Genus Noemiamea de Folin, 1886
- Genus Numaegilina Nomura, 1938
- Genus Obeliscus Anonymous, 1797 accepted as Pyramidella Lamarck, 1799
- Genus Obeliscus Gray, 1847 accepted as Pyramidella Lamarck, 1799
- Genus Obex Laws, 1940 accepted as Obexomia Laws, 1941
- Genus Obexomia Laws, 1941
- Genus Oda Monterosato, 1901 accepted as Noemiamea de Folin, 1886
- Genus Odentostomia Cossmann, 1917 accepted as Odostomia Fleming, 1813
- Genus Odetta de Folin, 1870
- Genus Odontostoma Turton in Carrington, 1830 accepted as Odostomia Fleming, 1813
- Genus Odontostoma Philippi, 1853 accepted as Odostomia Fleming, 1813
- Genus Odontostomia Jeffreys, 1839 accepted as Odostomia Fleming, 1813
- Genus Odontostomia Philippi, 1849 accepted as Odostomia Fleming, 1813
- Genus Odontostomia G.B. Sowerby I, 1839 accepted as Odostomia Fleming, 1813
- Genus Odontostomiella Cossmann & Peyrot, 1917 accepted as Odostomella Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Odostemia Bavay, 1898 accepted as Odostomia Fleming, 1813
- Genus Odostoima Folin, 1885 accepted as Odostomia Fleming, 1813
- Genus Odostoma Toula, 1911 accepted as Odostomia Fleming, 1813
- Genus Odostomella Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Odostomia Fleming, 1813
- Genus Odostomia Fleming, 1822 accepted as Odostomia Fleming, 1813
- Genus Odostomia Fleming, 1828 accepted as Odostomia Fleming, 1813
- Genus Odostomidea Pilsbry & Johnson, 1917 †
- Genus Odostomiella Fischer, 1885 accepted as Odostomella Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Odostonia Gray, 1825 accepted as Odostomia Fleming, 1813
- Genus Olfa Cossmann, 1907 † accepted as Ulfa Dall & Bartsch, 1904 †
- Genus Ondina de Folin, 1870
- Genus Oopyramis Thiele, 1930
- Genus Oopyramus Vaught, 1989 accepted as Oopyramis Thiele, 1930
- Genus Orina Adams, 1870
- Genus Orinella Dall & Bartsch, 1904
- Genus Orthosteles Paetel, 1875
- Genus Orthostelis Philippi, 1844
- Genus Ortostelis Aradas & Maggiore, 1841 accepted as Pyrgiscus Philippi, 1841
- Genus Oscilla A. Adams, 1861
- Genus Otopleura P. Fischer, 1885
- Genus Otostomella Paetel, 1888 accepted as Odostomella Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Pachysyrnola Cossmann, 1907
- Genus Paracigulina Nomura, 1936 accepted as Pseudocingulina Nomura, 1936
- Genus Paracingulina Nomura, 1936
- Genus Paradoxella Laseron, 1959
- Genus Paramormula Nomura, 1939 accepted as Turbonilla Risso, 1826
- Genus Paraturbonilla Böttger, 1907
- Genus Paregila Laseron, 1951
- Genus Parodizia de Medina, 1959
- Genus Parodostomia Laseron, 1959
- Genus Parthenia Lowe, 1841 accepted as Euparthenia Thiele, 1931
- Genus Parthenia H. Adams & A. Adams, 1853 accepted as Partulida Schaufuss, 1869
- Genus Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Partidula Ankel, 1936 accepted as Partulida Schaufuss, 1869
- Genus Partulida Schaufuss, 1869 accepted as Spiralinella Chaster, 1901
- Genus Peristichia Dall, 1889
- Genus Peristidina Cossmann, 1904 accepted as Peristichia Dall, 1889
- Genus Perparthenina Nordsieck, 1972
- Genus Petitella Wise, 1996 accepted as Petitilla Wise, 1997
- Genus Petitilla Wise, 1997
- Genus Pharcidella Dall, 1889 accepted as Longchaeus Mörch, 1875
- Genus Phasianema S. V. Wood, 1842
- Genus Planipyrgiscus † accepted as Planpyrgiscus Laws, 1937 †
- Genus Planpyrgiscus Laws, 1937 †
- Genus Planpyrgiscus Laws, 1937, nom. nud. † accepted as Planpyrgiscus Laws, 1937 †
- Genus Plicostomia Sacco, 1892
- Genus Plotia Röding, 1798 accepted as Pyramidella Lamarck, 1799
- Genus Polemicella Saurin, 1959
- Genus Polemicella Schander, Van Aartsen & Corgan, 1999
- Genus Polyspirella Carpenter, 1861
- Genus Prestonella Saurin, 1958
- Genus Pselliogyra Dall & Bartsch, 1909 accepted as Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Pseudocingulina Nomura, 1936
- Genus Pseudographis Mifsud, 1998 accepted as Kejdonia Mifsud, 1999
- Genus Pseudorissoina Tate & May, 1900
- Genus Pseudoscilla Boettger, 1901
- Genus Pseudoskenella Ponder, 1973
- Genus Ptycheulimella Sacco, 1892
- Genus Ptychostomon Locard, 1886 accepted as Odostomia Fleming, 1813
- Genus Pukenria Salisbury, 1944 accepted as Pukeuria Laws, 1941
- Genus Pukeuria Laws, 1941
- Genus Puncticingulina Nomura, 1938
- Genus Puposyrnola Cossmann, 1921
- Genus Purgisculus Cossmann, 1921 †
- Genus Purosyrnola accepted as Puposyrnola Cossmann, 1921
- Genus Purparthenia Grossu, 1986 accepted as Perparthenina Nordsieck, 1972
- Genus Pyagulina Powell, 1927 † accepted as Pyrgulina A. Adams, 1863
- Genus Pyrabinella Faber, 2013
- Genus Pyramidella Lamarck, 1799
- Genus Pyramidellus Montfort, 1810
- Genus Pyramis Brown, 1827
- Genus Pyramistomia Cossmann, 1921 †
- Genus Pyrgiscilla Laws, 1937 accepted as Pyrgiscus Philippi, 1841
- Genus Pyrgiscilla Laws, 1938
- Genus Pyrgisculus Monterosato, 1884
- Genus Pyrgiscus Philippi, 1841
- Genus Pyrgolambros Kobelt, 1903 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolampras Higo, Callomon, Goto, 1999 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolampris Kobelt, 1913 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolampros Sacco, 1892 accepted as Turbonilla Risso, 1826
- Genus Pyrgolamprus Kobelt, 1913 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolamprus Neave, 1940 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolampsus Toula, 1911 accepted as Pyrgolampros Sacco, 1892
- Genus Pyrgolidium Monterosato, 1884
- Genus Pyrgolina Harmer, 1923 † accepted as Pyrgulina A. Adams, 1863
- Genus Pyrgostelis Monterosato, 1884 accepted as Pyrgiscus Philippi, 1841
- Genus Pyrgostelus Monterosato, 1884
- Genus Pyrgostelys Sacco, 1892
- Genus Pyrgostylus Monterosato, 1884
- Genus Pyrguletta Cossmann, 1919
- Genus Pyrgulina A. Adams, 1863
- Genus Pyrhostylus Cossmann, 1921 †
- Genus Pyrigiscus accepted as Pyrgiscus Philippi, 1841
- Genus Pyroglampros Finlay, 1924 accepted as Pyrgolampros Sacco, 1892
- Genus Quirella Laseron, 1959
- Genus Raoulostraca Oliver, 1915
- Genus Raulinia Mayer, 1864 †
- Genus Ravnostomia Adegoke, 1977 †
- Genus Rhaphium Bayan, 1873 † accepted as Eulimella Forbes & MacAndrew, 1846
- Genus Rissopsetia Dell, 1956
- Genus Rissosyrnola Nomura, 1939 †
- Genus Rugadentia Laseron, 1951
- Genus Saccoina Oberling, 1971 † accepted as Kejdonia Mifsud, 1999
- Genus Sagella Paetel, 1889 accepted as Sayella Dall, 1885
- Genus Salasiella Kobelt, 1910 accepted as Salassiella Dall & Bartsch, 1909
- Genus Salassia de Folin, 1870
- Genus Salassia Folin in Folin & Périer, 1871
- Genus Salassiella Dall & Bartsch, 1909 accepted as Trabecula Monterosato, 1884
- Genus Sayella Dall, 1885
- Genus Sinuatodostomia Nomura, 1937
- Genus Sinustomia Cossmann, 1921 †
- Genus Siogamaia Nomura, 1936
- Genus Siogamia accepted as Siogamaia Nomura, 1936
- Genus Spica Sacco, 1892
- Genus Spiralina Chaster, 1898 accepted as Spiralinella Chaster, 1901
- Genus Spiralinella Chaster, 1901
- Genus Standeniella Saurin, 1958 accepted as Pyrgulina A. Adams, 1863
- Genus Stomatomega Cossmann, 1921 †
- Genus Stomega Dall & Bartsch, 1904 accepted as Megastomia Monterosato, 1884
- Genus Streptocionella Pfeffer, 1886
- Genus Striarcana Laws, 1938
- Genus Striarcana Laws, 1937 †
- Genus Striodostomia Laws, 1940
- Genus Strioturbonilla Sacco, 1892
- Genus Stylopsis A. Adams, 1860
- Genus Styloptygma A. Adams, 1860
- Genus Stylopyramis Thiele, 1929
- Genus Sulcorinella Dall & Bartsch, 1904 †
- Genus Sulcoturbonilla Sacco, 1892 †
- Genus Syrnola A. Adams, 1860
- Genus Syrnolina Dall & Bartsch, 1904
- Genus Taphrostomia Cossmann, 1921 †
- Genus Tathrella Laseron, 1959
- Genus Taurangia Laws, 1937 †
- Genus Telloda Hertlein & Strong, 1951 accepted as Eulimastoma Bartsch, 1916
- Genus Terebronilla Eames, 1951 †
- Genus Terelimella Laws, 1938
- Genus Tibecriola Cossmann, 1900 †
- Genus Tiberia Monterosato, 1875 accepted as Tiberia Jeffreys, 1884
- Genus Tiberia Jeffreys, 1884
- Genus Tiberiella Coen, 1933 accepted as Parthenina Bucquoy, Dautzenberg & Dollfus, 1883
- Genus Tiberiola Cossmann, 1900 † accepted as Tiberia Jeffreys, 1884
- Genus Tibersyrnola Laws, 1937 †
- Genus Trabecula Monterosato, 1884
- Genus Tragula Monterosato, 1884
- Genus Triptychus Mörch, 1875
- Genus Tropaeas Dall & Bartsch, 1904
- Genus Tropeas accepted as Tropaeas Dall & Bartsch, 1904
- Genus Tropoeas Cossmann, 1904 accepted as Tropaeas Dall & Bartsch, 1904
- Genus Turbillona Folin, 1885 accepted as Turbonilla Risso, 1826
- Genus Turbolidium Robba, 2013
- Genus Turbonella Gray, 1840 accepted as Turbonilla Risso, 1826
- Genus Turbonilla Risso, 1826
- Genus Turhonilla Folin, 1870 accepted as Turbonilla Risso, 1826
- Genus Turriodostomia Habe, 1961
- Genus Turritodostomia Sacco, 1892
- Genus Turritostomia Suter, 1913
- Genus Ugartea Bartsch, 1917
- Genus Ulfa Dall & Bartsch, 1904 †
- Genus Urambella Laseron, 1959 accepted as Pyramidella Lamarck, 1799
- Genus Vagna Dall & Bartsch, 1904
- Genus Variturbonilla F. Nordsieck, 1972 † accepted as Turbonilla Risso, 1826
- Genus Vilia Dall & Bartsch, 1904
- Genus Visma Dall & Bartsch, 1904
- Genus Voluspa Dall & Bartsch, 1904
- Genus Volutaxiella Strebel, 1908
- Genus Waikura Marwick, 1931 †
- Genus Wingenella Laseron, 1959 accepted as Longchaeus Mörch, 1875
- Genus Yoshishigea Hori & Fukuda, 1999
- Genus Zaphella Laseron, 1959 accepted as Asmunda Dall & Bartsch, 1904
- Genus Zastoma Iredale, 1915 accepted as Brachystomia Monterosato, 1884
- Genus Zonella Laseron, 1959 accepted as Hamarilla Eames & Wilkins, 1957
- Family Pyramidelloidea incertae sedis
- Family Ringiculidae Philippi, 1853
- Family Rissoellidae Gray, 1850
- Family Streptacididae Knight, 1931 †
- Family Stuoraxidae Bandel, 1994 †
- Family Tjaernoeiidae Warén, 1991
- Family Tjaernoiidae accepted as Tjaernoeiidae Warén, 1991
- Family Tofanellidae Bandel, 1995 †
- Family Tornatellidae Fleming, 1828 accepted as Acteonidae d'Orbigny, 1835
- Family Trachoecidae Bandel, 1994 †
- Family Trochactaeonidae Hacobjan, 1963 † accepted as Acteonellidae Gill, 1871 †
- Family Tubiferidae Cossmann, 1895 †
- Family Umboneidae Lyssenko & Aliev, 1987 † accepted as Nerineidae Zittel, 1873 †
- Family Umboniidae Lyssenko & Aliev, 1987 † accepted as Nerineidae Zittel, 1873 †
- Family Valvatidae Gray, 1840
- Family Valvatoidea (awaiting allocation)
- Family Xylodisculidae Warén, 1992
- Family Zardinellidae †
- Genus Masaevia Guzhov & Shapovalov, 2019 †
- Genus Racheliella Nützel, 2018 †
- 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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