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- Mollusca (132 851)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 013)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 753)
- Subclass Amphigastropoda † (396)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 670)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 172)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 449)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 121)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 585)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 782)
- Suborder Achatinina (2 912)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 630)
- Infraorder Arionoidei (140)
- Infraorder Clausilioidei (1 859)
- Infraorder Helicina incertae sedis (3 210)
- Superfamily Coelociontoidea Iredale, 1937 (5)
- Superfamily Papillodermatoidea Wiktor, R. Martin & Castillejo, 1990 (1)
- Superfamily Plectopyloidea Möllendorff, 1898 (144)
- Superfamily Punctoidea E. S. Morse, 1864 (1 789)
- Superfamily Testacelloidea J. E. Gray, 1840 (20)
- Superfamily Urocoptoidea Pilsbry, 1898 (1868) (1 251)
- Family Cerionidae Pilsbry, 1901 (192)
- Family Cylindrellidae Tryon, 1868 accepted as Urocoptinae Pilsbry, 1898 (1868)
- Family Epirobiidae F. G. Thompson, 2012 (22)
- Family Eucalodiidae P. Fischer & Crosse, 1873 (86)
- Family Holospiridae Pilsbry, 1946 (164)
- Family Urocoptidae Pilsbry, 1898 (1868) (787)
- Subfamily Brachypodellinae H. B. Baker, 1956 (43)
- Subfamily Urocoptidae incertae sedis (8)
- Subfamily Urocoptinae Pilsbry, 1898 (1868) (736)
- Genus Acracoptis [sic] accepted as Acrocoptis C. de la Torre & Bartsch, 1972
- Genus Acrocoptis C. de la Torre & Bartsch, 1972 (6)
- Genus Allocoptis F. G. Thompson & Franz, 1976 (1)
- Genus Amphicosmia Pilsbry & Vanatta, 1898 (5)
- Genus Amphistemma C. de la Torre & Bartsch, 1972 (1)
- Genus Angulicervix Pilsbry, 1933 (2)
- Genus Anoma Albers, 1850 (22)
- Genus Arangia Pilsbry & Vanatta, 1898 (8)
- Genus Archegocoptis Pilsbry, 1903 (7)
- Genus Autocoptis Pilsbry, 1902 (28)
- Genus Bactrocoptis Pilsbry, 1902 (4)
- Genus Badiofaux Pilsbry, 1941 (9)
- Genus Bialamus [sic] accepted as Bialasmus C. de la Torre & Bartsch, 1972
- Genus Bialasmus C. de la Torre & Bartsch, 1972 (3)
- Genus Brevipedella Pilsbry, 1903 (4)
- Genus Callocoptis C. de la Torre & Bartsch, 1972 (4)
- Genus Callonia Crosse & P. Fischer, 1870 (4)
- Genus Capillacea C. de la Torre & Bartsch, 1972 (3)
- Genus Carcinostemma C. de la Torre & Jaume, 1972 (3)
- Genus Centralia C. de la Torre & Bartsch, 1972 (20)
- Genus Cochlodinella Pilsbry & Vanatta, 1898 (39)
- Genus Cylindrella L. Pfeiffer, 1840 accepted as Brachypodella H. Beck, 1837
- Genus Esochara Pilsbry & Vanatta, 1898 (3)
- Genus Fibricutis Pilsbry, 1903
- Genus Geminicoptis C. de la Torre & Bartsch, 1972 (2)
- Genus Gongylostoma Albers, 1850 (17)
- Genus Gongylostomella Pilsbry, 1941 (17)
- Genus Gyraxis Pilsbry, 1903 (20)
- Genus Heterocoptis C. de la Torre & Bartsch, 1972 (21)
- Genus Idiostemma Pilsbry & Vanatta, 1898 (5)
- Genus Inliaculus Schaufuss, 1869 accepted as Anoma Albers, 1850
- Genus Insulaceramus Clench, 1967 (2)
- Genus Johaniceramus C. de la Torre & Bartsch, 1972 (1)
- Genus Katastoma Clench, 1935 accepted as Brevipedella Pilsbry, 1903
- Genus Leia Albers, 1850 accepted as Anoma Albers, 1850
- Genus Leptospira Swainson, 1840 accepted as Macroceramus Guilding, 1828
- Genus Levistemma C. de la Torre & Bartsch, 1972 (1)
- Genus Liocallonia Pilsbry, 1902 (36)
- Genus Lioidiostemma C. de la Torre & Bartsch, 2008 accepted as Planostemma C. de la Torre & Bartsch, 1972
- Genus Liparotes Pilsbry, 1903 (4)
- Genus Maceo Pilsbry & Vanatta, 1898 (1)
- Genus Macroceramus Guilding, 1828 (61)
- Genus Microceramus Pilsbry & Vanatta, 1898 (71)
- Genus Nesocoptis Pilsbry, 1941 (5)
- Genus Nodulia C. de la Torre & Bartsch, 1972 (7)
- Genus Organocoptis C. de la Torre & Bartsch, 1972 (10)
- Genus Orienticoptis C. de la Torre & Bartsch, 1972 (1)
- Genus Paracallonia Pilsbry, 1903 (1)
- Genus Pfeiffericoptis C. de la Torre & Bartsch, 1972 (13)
- Genus Pineria Poey, 1854 (3)
- Genus Planostemma C. de la Torre & Bartsch, 1972 (4)
- Genus Pleurostemma Pilsbry, 1941 (3)
- Genus Poecilocoptis Pilsbry, 1941 (9)
- Genus Poeycoptis C. de la Torre & Bartsch, 1972 (4)
- Genus Pseudopineria Aguayo, 1938 (2)
- Genus Pycnoptychia Pilsbry & Vanatta, 1898 (8)
- Genus Sagracoptis C. de la Torre & Bartsch, 1972 (7)
- Genus Scopulospica Pilsbry, 1941 accepted as Tomelasmus Pilsbry & Vanatta, 1898
- Genus Sectilumen Pilsbry & Vanatta, 1898 (1)
- Genus Spiraxilla Thiele, 1931 accepted as Gyraxis Pilsbry, 1903
- Genus Spiroceramus Pilsbry & Vanatta, 1898 (4)
- Genus Spirostemma Pilsbry & Vanatta, 1898 (15)
- Genus Steatocoptis Pilsbry, 1941 (3)
- Genus Strophina Mörch, 1852 (1)
- Genus Teneria C. de la Torre & Bartsch, 1972 (1)
- Genus Tenuistemma C. de la Torre & Bartsch, 1972 (2)
- Genus Tetrentodon Pilsbry, 1903 (79)
- Genus Tomelasmus Pilsbry & Vanatta, 1898 (20)
- Genus Torrecoptis Bartsch, 1943 (64)
- Genus Trachelia L. Pfeiffer, 1853 accepted as Tetrentodon Pilsbry, 1903
- Genus Trilamellaxis C. de la Torre & Bartsch, 1972 (6)
- Genus Uncinicoptis C. de la Torre & Bartsch, 1972 (8)
- Genus Urocoptis H. Beck, 1837 (20)
- Subgenus Urocoptis (Amphicosmia) Pilsbry & Vanatta, 1898 accepted as Amphicosmia Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Arangia) Pilsbry & Vanatta, 1898 accepted as Arangia Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Autocoptis) Pilsbry, 1902 accepted as Autocoptis Pilsbry, 1902
- Subgenus Urocoptis (Bactrocoptis) Pilsbry, 1902 accepted as Bactrocoptis Pilsbry, 1902
- Subgenus Urocoptis (Badiofaux) Pilsbry, 1941 accepted as Badiofaux Pilsbry, 1941
- Subgenus Urocoptis (Cochlodinella) Pilsbry & Vanatta, 1898 accepted as Cochlodinella Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Esochara) Pilsbry & Vanatta, 1898 accepted as Esochara Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Gongylostoma) Albers, 1850 accepted as Gongylostoma Albers, 1850
- Species Urocoptis (Gongylostoma) abdita (Arango, 1880) accepted as Callocoptis abdita (Arango, 1880)
- Species Urocoptis (Gongylostoma) abnormis (Poey, 1857) accepted as Steatocoptis abnormis (Poey, 1857)
- Species Urocoptis (Gongylostoma) alvearis C. de la Torre, 1911 accepted as Centralia alvearis (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) arangiana (Arango, 1878) accepted as Gongylostoma arangiana (Arango, 1878)
- Species Urocoptis (Gongylostoma) assimilis (Arango, 1884) accepted as Tomelasmus assimilis (Arango, 1884)
- Species Urocoptis (Gongylostoma) atropurpurea (Arango, 1882) accepted as Cochlodinella atropurpurea (Arango, 1882)
- Species Urocoptis (Gongylostoma) auberiana (A. d'Orbigny, 1841) accepted as Poeycoptis auberiana (A. d'Orbigny, 1841)
- Species Urocoptis (Gongylostoma) bacillaris C. de la Torre, 1912 accepted as Torrecoptis bacillaris (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) blainiana (L. Pfeiffer, 1863) accepted as Cochlodinella blainiana (L. Pfeiffer, 1863)
- Species Urocoptis (Gongylostoma) boqueronis C. de la Torre, 1912
- Species Urocoptis (Gongylostoma) caeciliae (Arango, 1876) accepted as Poeycoptis caeciliae (Arango, 1876)
- Species Urocoptis (Gongylostoma) camagueyana C. de la Torre, 1912 accepted as Torrecoptis camagueyana (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) canteroiana (Arango, 1876) accepted as Gongylostomella canteroiana (Arango, 1876)
- Species Urocoptis (Gongylostoma) cara Pilsbry & J. B. Henderson, 1913
- Species Urocoptis (Gongylostoma) cienfuegoensis Pilsbry, 1913
- Species Urocoptis (Gongylostoma) cinerea (L. Pfeiffer, 1850) accepted as Torrecoptis cinerea (L. Pfeiffer, 1850)
- Species Urocoptis (Gongylostoma) cioniscus C. de la Torre, 1911 accepted as Centralia cioniscus (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) coerulans (Poey, 1857) accepted as Poecilocoptis coerulans (Poey, 1858)
- Species Urocoptis (Gongylostoma) coloratus (Arango, 1882) accepted as Tomelasmus coloratus (Arango, 1882)
- Species Urocoptis (Gongylostoma) confusa (Arango, 1882) accepted as Gongylostoma confusa (Arango, 1882)
- Species Urocoptis (Gongylostoma) consanguinea (Arango, 1882) accepted as Sagracoptis consanguinea (Arango, 1882)
- Species Urocoptis (Gongylostoma) contentiosa (Arango, 1884) accepted as Gongylostomella contentiosa (Arango, 1884)
- Species Urocoptis (Gongylostoma) coronadoi (L. Pfeiffer, 1863) accepted as Sagracoptis coronadoi (L. Pfeiffer, 1863)
- Species Urocoptis (Gongylostoma) crassilabris (Arango, 1882) accepted as Poecilocoptis crassilabris (Arango, 1882)
- Species Urocoptis (Gongylostoma) crenulata (Gundlach, 1856) accepted as Tomelasmus crenulatus (Gundlach, 1856)
- Species Urocoptis (Gongylostoma) crispula (L. Pfeiffer, 1839) accepted as Sagracoptis crispula (L. Pfeiffer, 1839)
- Species Urocoptis (Gongylostoma) dautzenbergiana (Crosse, 1891) accepted as Callonia dautzenbergiana (Crosse, 1891)
- Species Urocoptis (Gongylostoma) diagonalis Clench, 1966 accepted as Gongylostomella canteroiana diagonalis (Clench, 1966)
- Species Urocoptis (Gongylostoma) diaphana (Arango, 1878) accepted as Poecilocoptis diaphana (Arango, 1878)
- Species Urocoptis (Gongylostoma) difficultosa (Arango, 1882) accepted as Sagracoptis difficultosa (Arango, 1882)
- Species Urocoptis (Gongylostoma) dilatata C. de la Torre, 1911 accepted as Centralia dilatata (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) dimidiata C. de la Torre, 1911 accepted as Centralia dimidiata (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) discors (Poey, 1858) accepted as Poecilocoptis discors (Poey, 1858)
- Variety Urocoptis (Gongylostoma) discors var. lagunillensis Pilsbry, 1903 accepted as Poecilocoptis lagunillensis (Pilsbry, 1903)
- Species Urocoptis (Gongylostoma) distincta (Arango, 1876) accepted as Sagracoptis distincta (Arango, 1876)
- Species Urocoptis (Gongylostoma) elegans (L. Pfeiffer, 1839) accepted as Gongylostoma elegans (L. Pfeiffer, 1839)
- Species Urocoptis (Gongylostoma) ellioti (Poey, 1858) accepted as Callonia elliotti (Poey, 1858)
- Species Urocoptis (Gongylostoma) exquisita Clench, 1966 accepted as Torrecoptis barbouri exquisita (Clench, 1966)
- Species Urocoptis (Gongylostoma) fallax C. de la Torre, 1911 accepted as Trilamellaxis fallax (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) fortiuscula C. de la Torre, 1912 accepted as Torrecoptis fortiuscula (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) fraterna Pilsbry, 1903 accepted as Capillacea capillacea fraterna (Pilsbry, 1903)
- Species Urocoptis (Gongylostoma) garciana (Presas, 1865) accepted as Pfeiffericoptis garciana (Presas, 1865)
- Species Urocoptis (Gongylostoma) gracillima (Poey, 1853) accepted as Tetrentodon gracillima (Poey, 1853)
- Species Urocoptis (Gongylostoma) gutierrezi (Arango, 1876) accepted as Badiofaux gutierrezi (Arango, 1876)
- Species Urocoptis (Gongylostoma) hidalgoi (Arango, 1878) accepted as Uncinicoptis hidalgoi (Arango, 1879)
- Species Urocoptis (Gongylostoma) hilleiana (Arango, 1876) accepted as Gongylostoma hilleiana (Arango, 1876)
- Species Urocoptis (Gongylostoma) imparata (Arango, 1882) accepted as Bialasmus imparata (Arango, 1882)
- Species Urocoptis (Gongylostoma) infortunata (Arango, 1882) accepted as Liocallonia infortunata (Arango, 1882)
- Species Urocoptis (Gongylostoma) intuscoarctata C. de la Torre, 1911 accepted as Centralia intuscoarctata (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) irrorata (Gundlach, 1856) accepted as Tomelasmus irroratus (Gundlach, 1856)
- Species Urocoptis (Gongylostoma) joaquini Pilsbry, 1903 accepted as Uncinicoptis joaquini (Pilsbry, 1903)
- Species Urocoptis (Gongylostoma) lajoncherei (Arango, 1884) accepted as Torrecoptis lajoncherei (Arango, 1884)
- Species Urocoptis (Gongylostoma) lavalleana (A. d'Orbigny, 1841) accepted as Tomelasmus lavalleanus (A. d'Orbigny, 1841)
- Species Urocoptis (Gongylostoma) lirata (L. Pfeiffer, 1863) accepted as Gongylostoma lirata (L. Pfeiffer, 1863)
- Species Urocoptis (Gongylostoma) lituus (A. Gould, 1842) accepted as Poeycoptis lituus (A. Gould, 1842)
- Species Urocoptis (Gongylostoma) livida C. de la Torre, 1912 accepted as Torrecoptis livida (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) longa Pilsbry & J. B. Henderson, 1913 accepted as Torrecoptis longa (Pilsbry & J. B. Henderson, 1913)
- Species Urocoptis (Gongylostoma) lucens (G. B. Sowerby II, 1877) accepted as Pfeiffericoptis lucens (G. B. Sowerby II, 1877)
- Species Urocoptis (Gongylostoma) machoi (Arango, 1876) accepted as Pfeiffericoptis machoi (Arango, 1876)
- Species Urocoptis (Gongylostoma) marmorata (Shuttleworth, 1852) accepted as Tetrentodon marmorata (Shuttleworth, 1852)
- Species Urocoptis (Gongylostoma) mayajiguensis C. de la Torre, 1911 accepted as Centralia mayajiguensis (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) mayensis C. de la Torre & Ramsden, 1914
- Species Urocoptis (Gongylostoma) modesta Poey, 1858 accepted as Tetrentodon modesta (Poey, 1858)
- Species Urocoptis (Gongylostoma) moralesi (Arango, 1876) accepted as Pfeiffericoptis moralesi (Arango, 1876)
- Species Urocoptis (Gongylostoma) multispiralis (G. B. Sowerby II, 1877) accepted as Tenuistemma multispiralis (G. B. Sowerby II, 1877)
- Species Urocoptis (Gongylostoma) nubila (Poey, 1857) accepted as Poecilocoptis nubila (Poey, 1857)
- Species Urocoptis (Gongylostoma) oligomesus Pilsbry, 1903 accepted as Liocallonia oligomesa (Pilsbry, 1903)
- Species Urocoptis (Gongylostoma) oviedoiana (A. d'Orbigny, 1841) accepted as Esochara oviedoiana (A. d'Orbigny, 1841)
- Species Urocoptis (Gongylostoma) pallidula C. de la Torre, 1912 accepted as Torrecoptis pallidula (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) palmae (Arango, 1876) accepted as Liocallonia palmae (Arango, 1876)
- Species Urocoptis (Gongylostoma) parallela C. de la Torre, 1912
- Species Urocoptis (Gongylostoma) patruelis (Arango, 1876) accepted as Liocallonia patruelis (Arango, 1876)
- Species Urocoptis (Gongylostoma) plicata (Poey, 1856) accepted as Tetrentodon plicata (Poey, 1856)
- Species Urocoptis (Gongylostoma) porrecta (A. Gould, 1842) accepted as Tetrentodon porrecta (A. Gould, 1842)
- Species Urocoptis (Gongylostoma) prima (Arango, 1882) accepted as Nesocoptis prima (Arango, 1882)
- Species Urocoptis (Gongylostoma) propinqua (Arango, 1882) accepted as Liocallonia propinqua (Arango, 1882)
- Species Urocoptis (Gongylostoma) proteus C. de la Torre, 1911 accepted as Trilamellaxis proteus (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) pruinosa (Morelet, 1849) accepted as Nesocoptis pruinosa (Morelet, 1849)
- Species Urocoptis (Gongylostoma) remediensis C. de la Torre, 1911 accepted as Trilamellaxis remediensis (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) remota (Arango, 1880) accepted as Organocoptis remota (Arango, 1880)
- Species Urocoptis (Gongylostoma) rugeli (Shuttleworth, 1852) accepted as Tetrentodon rugeli (Shuttleworth, 1852)
- Species Urocoptis (Gongylostoma) sauvalleana (Gundlach, 1856) accepted as Tomelasmus sauvalleanus (Gundlach, 1856)
- Species Urocoptis (Gongylostoma) saxosa (Poey, 1857) accepted as Liocallonia saxosa (Poey, 1858)
- Species Urocoptis (Gongylostoma) scalarina (Shuttleworth, 1852) accepted as Tetrentodon scalarina (Shuttleworth, 1852)
- Species Urocoptis (Gongylostoma) shuttleworthiana (Poey, 1857) accepted as Pycnoptychia shuttleworthiana (Poey, 1858)
- Species Urocoptis (Gongylostoma) stearnsi (Arango, 1878) accepted as Poeycoptis lituus stearnsi (Arango, 1878)
- Species Urocoptis (Gongylostoma) strangulata (Poey, 1857) accepted as Esochara strangulata (Poey, 1858)
- Species Urocoptis (Gongylostoma) stricta C. de la Torre, 1912 accepted as Torrecoptis stricta (C. de la Torre, 1912)
- Species Urocoptis (Gongylostoma) torquatus (Morelet, 1849) accepted as Tomelasmus torquatus (Morelet, 1849)
- Species Urocoptis (Gongylostoma) torrei (Arango, 1876) accepted as Pycnoptychia torrei (Arango, 1876)
- Species Urocoptis (Gongylostoma) transitoria C. de la Torre, 1911 accepted as Trilamellaxis transitoria (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) triplicata (Arango, 1882) accepted as Liocallonia triplicata (Arango, 1882)
- Species Urocoptis (Gongylostoma) tuba C. de la Torre, 1911 accepted as Centralia tuba (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) tumidiorus (G. B. Sowerby II, 1877) accepted as Tomelasmus tumidiorus (G. B. Sowerby II, 1877)
- Species Urocoptis (Gongylostoma) turgida C. de la Torre, 1911 accepted as Centralia turgida (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) uberrima C. de la Torre, 1911
- Species Urocoptis (Gongylostoma) unguiculata (Arango, 1880) accepted as Uncinicoptis unguiculata (Arango, 1880)
- Species Urocoptis (Gongylostoma) villarensis C. de la Torre, 1911 accepted as Centralia villarensis (C. de la Torre, 1911)
- Species Urocoptis (Gongylostoma) volubilis (Morelet, 1849) accepted as Liocallonia volubilis (Morelet, 1849)
- Species Urocoptis (Gongylostoma) whittumi Clench, 1966 accepted as Urocoptis whittumi Clench, 1966
- Subgenus Urocoptis (Idiostemma) Pilsbry & Vanatta, 1898 accepted as Idiostemma Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Liocallonia) Pilsbry, 1902 accepted as Liocallonia Pilsbry, 1902
- Subgenus Urocoptis (Nesocoptis) Pilsbry, 1941 accepted as Nesocoptis Pilsbry, 1941
- Subgenus Urocoptis (Paracallonia) Pilsbry, 1903 accepted as Paracallonia Pilsbry, 1903
- Subgenus Urocoptis (Pycnoptychia) Pilsbry & Vanatta, 1898 represented as Pycnoptychia Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Sectilumen) Pilsbry & Vanatta, 1898 accepted as Sectilumen Pilsbry & Vanatta, 1898
- Subgenus Urocoptis (Spirocoptis) Pilsbry, 1902 represented as Urocoptis H. Beck, 1837
- Subgenus Urocoptis (Spirostemma) Pilsbry & Vanatta, 1898 represented as Urocoptis H. Beck, 1837
- Subgenus Urocoptis (Steatocoptis) Pilsbry, 1941 accepted as Steatocoptis Pilsbry, 1941
- Subgenus Urocoptis (Tetrentodon) Pilsbry, 1903 accepted as Tetrentodon Pilsbry, 1903
- Subgenus Urocoptis (Urocoptis) H. Beck, 1837 represented as Urocoptis H. Beck, 1837
- Subgenus Urocoptis (Urocoptola) Clench, 1935 accepted as Autocoptis (Urocoptola) Clench, 1935
- Species Urocoptis acicularis C. de la Torre, 1912 accepted as Torrecoptis acicularis (C. de la Torre, 1912)
- Species Urocoptis alleni Pilsbry, 1929 accepted as Tetrentodon alleni (Pilsbry, 1929)
- Species Urocoptis ambigua (C. B. Adams, 1849)
- Species Urocoptis amethystina (Chitty, 1855)
- Species Urocoptis anafensis J. B. Henderson, 1916 accepted as Torrecoptis anafensis (J. B. Henderson, 1916)
- Species Urocoptis antiquus Pilsbry & Olsson, 1954 †
- Species Urocoptis aspersa (C. B. Adams, 1849)
- Species Urocoptis bacillaris C. de la Torre, 1912 accepted as Torrecoptis bacillaris (C. de la Torre, 1912)
- Species Urocoptis baculum Pilsbry, 1903 accepted as Torrecoptis baculum (Pilsbry, 1903)
- Species Urocoptis baquieana (Chitty, 1855)
- Species Urocoptis brevis (L. Pfeiffer, 1841)
- Species Urocoptis camagueyana (C. de la Torre, 1912) accepted as Torrecoptis camagueyana (C. de la Torre, 1912)
- Species Urocoptis cara Pilsbry & J. B. Henderson, 1913 accepted as Heterocoptis cara (Pilsbry & J. B. Henderson, 1913)
- Species Urocoptis chambasensis Pilsbry, 1929 accepted as Centralia chambasensis (Pilsbry, 1929)
- Species Urocoptis corpulenta Spence, 1936 accepted as Nodulia corpulenta (Spence, 1936)
- Species Urocoptis creola Aguayo, 1934 accepted as Gongylostomella creola (Aguayo, 1934)
- Species Urocoptis cuestai C. de la Torre, 1929 accepted as Liocallonia cuestai (C. de la Torre, 1929)
- Species Urocoptis cyclostoma (L. Pfeiffer, 1855) accepted as Tetrentodon cyclostoma (L. Pfeiffer, 1855)
- Species Urocoptis cylindrus (Dillwyn, 1817)
- Species Urocoptis dautzenbergiana (Crosse, 1891) accepted as Callonia dautzenbergiana (Crosse, 1891)
- Species Urocoptis delectabilis Pilsbry, 1929 accepted as Acrocoptis delectabilis (Pilsbry, 1929)
- Species Urocoptis dubia (Chitty, 1853)
- Species Urocoptis elliotti (Poey, 1858) accepted as Callonia elliotti (Poey, 1858)
- Species Urocoptis floridana (Dall, 1890) †
- Species Urocoptis gravesii (C. B. Adams, 1849)
- Species Urocoptis guigouana (Petit de la Saussaye, 1859) accepted as Autocoptis guigouana (Petit de la Saussaye, 1859)
- Species Urocoptis hendersoni Pilsbry, 1902
- Species Urocoptis heterosculpta C. de la Torre, 1932 accepted as Gongylostoma heterosculpta (C. de la Torre, 1932)
- Species Urocoptis hidalgoi (Arango, 1878) accepted as Uncinicoptis hidalgoi (Arango, 1879)
- Species Urocoptis instabilis (Vendryes, 1901)
- Species Urocoptis intusfalcata C. de la Torre & Ramsden, 1929 accepted as Planostemma intusfalcata (C. de la Torre & Ramsden, 1929)
- Species Urocoptis ischna Pilsbry, 1903 accepted as Tetrentodon ischna (Pilsbry, 1903)
- Species Urocoptis livida C. de la Torre, 1912 accepted as Torrecoptis livida (C. de la Torre, 1912)
- Species Urocoptis lowei Pilsbry, 1927 accepted as Callonia lowei (C. de la Torre, 1927)
- Species Urocoptis manzanillensis C. de la Torre, 1929 accepted as Cochlodinella manzanillensis (C. de la Torre, 1929)
- Species Urocoptis megacheila (Chitty, 1855)
- Species Urocoptis mellita C. de la Torre, 1932 accepted as Tetrentodon mellitus (C. de la Torre, 1932)
- Species Urocoptis mendozana Pilsbry, 1928 accepted as Badiofaux mendozana (Pilsbry, 1928)
- Species Urocoptis monelasmus Pilsbry, 1928 accepted as Badiofaux monelasmus (Pilsbry, 1928)
- Species Urocoptis monilifera (L. Pfeiffer, 1850) accepted as Autocoptis monilifera (L. Pfeiffer, 1850)
- Species Urocoptis nobilior (C. B. Adams, 1845)
- Species Urocoptis nodulifera C. de la Torre, 1929 accepted as Nodulia nodulifera (C. de la Torre, 1929)
- Species Urocoptis ornata (L. Pfeiffer, 1859) accepted as Sectilumen ornata (L. Pfeiffer, 1859)
- Species Urocoptis ovata (Deshayes, 1851)
- Species Urocoptis parallela C. de la Torre, 1912 accepted as Heterocoptis parallela (C. de la Torre, 1912)
- Species Urocoptis poeyana (A. d'Orbigny, 1841) accepted as Cochlodinella poeyana (A. d'Orbigny, 1841)
- Species Urocoptis procera (C. B. Adams, 1850)
- Species Urocoptis producta (C. B. Adams, 1851)
- Species Urocoptis proteus C. de la Torre, 1911 accepted as Trilamellaxis proteus (C. de la Torre, 1911)
- Species Urocoptis rocai C. de la Torre, 1929 accepted as Geminicoptis rocai (C. de la Torre, 1929)
- Species Urocoptis sanguinea (L. Pfeiffer, 1845)
- Species Urocoptis scalarina (Shuttleworth, 1852) accepted as Tetrentodon scalarinus (Shuttleworth, 1852)
- Species Urocoptis scobinata C. de la Torre & Ramsden, 1915 accepted as Arangia scobinata (C. de la Torre & Ramsden, 1915)
- Species Urocoptis semicoloratus Spence, 1936 accepted as Tomelasmus semicoloratus (Spence, 1936)
- Species Urocoptis sinistra C. de la Torre, 1928 accepted as Pfeiffericoptis sinistra (C. de la Torre, 1928)
- Species Urocoptis spirifer Pilsbry, 1929 accepted as Torrecoptis spirifer (Pilsbry, 1929)
- Species Urocoptis tenuistriata Aguayo, 1932 accepted as Tetrentodon tenuistriatus (Aguayo, 1932)
- Species Urocoptis terebella C. de la Torre, 1929 accepted as Geminicoptis terebella (C. de la Torre, 1929)
- Species Urocoptis torreana Pilsbry, 1929 accepted as Centralia torreana (Pilsbry, 1929)
- Species Urocoptis torrei Pilsbry, 1929 accepted as Centralia torreana (Pilsbry, 1929)
- Species Urocoptis transparens (L. Pfeiffer, 1866)
- Species Urocoptis turneri Pilsbry, 1929 accepted as Gongylostomella turneri (Pilsbry, 1929)
- Species Urocoptis ventricosa (L. Pfeiffer, 1857) accepted as Steatocoptis ventricosa (L. Pfeiffer, 1857)
- Species Urocoptis vignalensis (L. Pfeiffer, 1863) accepted as Nodulia vignalensis (L. Pfeiffer, 1863)
- Species Urocoptis villarensis C. de la Torre, 1911 accepted as Centralia villarensis (C. de la Torre, 1911)
- Species Urocoptis whittumi Clench, 1966 accepted as Heterocoptis whittumi (Clench, 1966)
- Species Urocoptis wrighti (L. Pfeiffer, 1862) accepted as Gongylostomella wrighti (L. Pfeiffer, 1862)
- Species Urocoptis zonata (C. B. Adams, 1851)
- Genus Vendryesia C. T. Simpson, 1895 accepted as Anoma Albers, 1850
- Infraorder Helicoidei (5 691)
- Infraorder Limacoidei (4 251)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 581)
- Infraorder Partuloinei accepted as Pupilloidei
- Infraorder Pupilloidei (3 436)
- Infraorder Rhytidoidei (581)
- Infraorder Sagdoinei accepted as Helicoidei
- Infraorder Succineoidei (384)
- Suborder Orthurethra accepted as Pupilloidei
- Suborder Scolodontina (165)
- Suborder Sigmurethra accepted as Helicina
- Suborder Stylommatophora incertae sedis (75)
- Order Systellommatophora (224)
- Superorder Hygrophila (2 005)
- Superorder Pneumopulmonata
- Superorder Pylopulmonata (4 285)
- Superorder Sacoglossa (391)
- Superorder Siphonarimorpha (163)
- Order Anaspidea accepted as Aplysiida
- Order Aplysiida (101)
- Order Aplysiomorpha accepted as Aplysiida
- Order Archaeopulmonata accepted as Siphonarioidea Gray, 1827
- Order Bullomorpha accepted as Cephalaspidea
- Order Cephalaspidea (1 034)
- Order Heterostropha accepted as Pyramidellidae J. E. Gray, 1840
- Order Pteropoda (414)
- Order Runcinacea accepted as Runcinida
- Order Runcinida (80)
- Order Tectibranchiata
- Order Thecosomata
- Order Umbraculida (15)
- Superorder Euthyneura incertae sedis
- Infraclass Heterobranchia incertae sedis (478)
- Infraclass Mesoneura (108)
- Infraclass Opisthobranchia
- Infraclass Pulmonata
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 914)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (511)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 782)
- Class Lamellibranchiata accepted as Bivalvia
- Class Loricata accepted as Polyplacophora
- Class Mollusca incertae sedis † (372)
- Class Monoplacophora (229)
- Class Pelecypoda accepted as Bivalvia
- Class Polyplacophora (1 377)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (752)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata
