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- Mollusca (132 791)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 009)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 697)
- Subclass Amphigastropoda † (390)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 636)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 156)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 433)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 105)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 569)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 766)
- Suborder Achatinina (2 900)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 626)
- Infraorder Arionoidei (140)
- Infraorder Clausilioidei (1 859)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 690)
- Infraorder Limacoidei (4 251)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 578)
- Superfamily Bulimuloidea Tryon, 1867 accepted as Orthalicoidea E. von Martens, 1860
- Superfamily Orthalicoidea E. von Martens, 1860 (1 578)
- Family Amphibulimidae P. Fischer, 1873 (109)
- Family Bothriembryontidae Iredale, 1937 (168)
- Family Bulimulidae Tryon, 1867 (940)
- Subfamily Berendtiinae P. Fischer & Crosse, 1872 accepted as Bulimulinae Tryon, 1867
- Subfamily Bostrycinae Breure, 2012 (219)
- Genus Bilamelliferus Weyrauch, 1958 accepted as Bostryx (Dentaxis) Pilsbry, 1902
- Genus Bostryx Troschel, 1847 (219)
- Subgenus Bostryx (Bostryx) Troschel, 1847 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Dentaxis) Pilsbry, 1902 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Discobostryx) Pilsbry & Olsson, 1949 accepted as Bostryx Troschel, 1847
- Subgenus Bostryx (Elatibostryx) Weyrauch, 1958 accepted as Bostryx Troschel, 1847
- Subgenus Bostryx (Geoceras) Pilsbry, 1896 accepted as Bostryx Troschel, 1847
- Subgenus Bostryx (Geopyrgus) Pilsbry, 1896 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Kionoptyx) F. Haas, 1966 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Lissoacme) Pilsbry, 1896 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Multifasciatus) Weyrauch, 1958 accepted as Bostryx (Geopyrgus) Pilsbry, 1896
- Subgenus Bostryx (Pampasinus) Weyrauch, 1958 accepted as Bostryx (Platybostryx) Pilsbry, 1896
- Subgenus Bostryx (Peronaeus) Albers, 1860 accepted as Bostryx (Bostryx) Troschel, 1847
- Subgenus Bostryx (Phenacotaxus) Dall, 1912 accepted as Bostryx Troschel, 1847
- Subgenus Bostryx (Platybostryx) Pilsbry, 1896 accepted as Bostryx Troschel, 1847
- Species Bostryx (Platybostryx) doelloi Hylton Scott, 1953 accepted as Bostryx doelloi Hylton Scott, 1953
- Species Bostryx (Platybostryx) eremothauma Pilsbry, 1896 represented as Bostryx eremothauma (Pilsbry, 1896)
- Species Bostryx (Platybostryx) fisheri Pilsbry, 1956 represented as Bostryx fisheri Pilsbry, 1956
- Subgenus Bostryx (Pseudoperonaeus) Weyrauch, 1958 accepted as Bostryx (Geopyrgus) Pilsbry, 1896
- Subgenus Bostryx (Scansicohlea) Pilsbry, 1930 represented as Bostryx Troschel, 1847
- Subgenus Bostryx (Vermetellus) F. Haas, 1951 represented as Bostryx Troschel, 1847
- Species Bostryx abancayensis Pilsbry, 1944
- Species Bostryx acalles (L. Pfeiffer, 1853)
- Species Bostryx acme (F. Haas, 1955)
- Species Bostryx acromelas (Morelet, 1863)
- Species Bostryx aequicostata (Rehder, 1945) accepted as Bostryx scalarioides (L. Pfeiffer, 1867)
- Species Bostryx affinis (Broderip, 1832)
- Species Bostryx agueroi Weyrauch, 1960
- Species Bostryx aguilari Weyrauch, 1967
- Species Bostryx aileenae Breure, 1978
- Species Bostryx alausiensis (Cousin, 1887)
- Species Bostryx albicans (Broderip, 1832)
- Species Bostryx albicolor (Morelet, 1860)
- Species Bostryx albus (G. B. Sowerby I, 1833)
- Species Bostryx anachoreta (L. Pfeiffer, 1856)
- Species Bostryx ancavilorum Araya, 2015
- Species Bostryx andoicus (Morelet, 1860)
- Species Bostryx angiportus (Pilsbry, 1932)
- Species Bostryx angrandianus (Pilsbry, 1897)
- Species Bostryx anomphalus Pilsbry, 1944
- Species Bostryx apodemetes (A. d'Orbigny, 1835) accepted as Naesiotus apodemetes (A. d'Orbigny, 1835)
- Species Bostryx apurimacensis (Dall, 1917)
- Species Bostryx arcuatus Breure, 1978
- Species Bostryx atacamensis (L. Pfeiffer, 1856)
- Species Bostryx baeri (Dautzenberg, 1901)
- Species Bostryx balsanus (Morelet, 1863)
- Species Bostryx bermudezae Weyrauch, 1958
- Species Bostryx bicolor (Weyrauch, 1967)
- Species Bostryx bilineatus (G. B. Sowerby I, 1833)
- Species Bostryx binghami (Dall, 1910)
- Species Bostryx birabenorum Weyrauch, 1965
- Species Bostryx bisculptus (L. Pfeiffer, 1869)
- Species Bostryx bonneti (Ancey, 1902)
- Species Bostryx borellii (Ancey, 1897)
- Species Bostryx breurei Araya, 2015
- Species Bostryx bromeliarum (Pilsbry, 1930)
- Species Bostryx caerulescens (L. Pfeiffer, 1858) accepted as Neopetraeus caerulescens (L. Pfeiffer, 1858)
- Species Bostryx cajacayensis Breure & Neubert, 2008
- Species Bostryx calderaensis Araya, 2015
- Species Bostryx carandaitiensis (Preston, 1907)
- Species Bostryx carinatus Breure, 1978
- Species Bostryx catamarcanus (Parodiz, 1956)
- Species Bostryx ceratacme (L. Pfeiffer, 1855)
- Species Bostryx cercicola (Morelet, 1863)
- Species Bostryx ceroplasta (Pilsbry, 1896)
- Species Bostryx chacoensis (Preston, 1907)
- Species Bostryx chagualensis (Pilsbry, 1932)
- Species Bostryx chusgonensis Weyrauch, 1960
- Species Bostryx circuliportus Breure, 1978
- Species Bostryx claviformis (F. Haas, 1951)
- Species Bostryx coelhoi Breure, 1978
- Species Bostryx cokerianus (Dall, 1909)
- Species Bostryx columellaris (Reeve, 1849)
- Species Bostryx compactus (Fulton, 1902)
- Species Bostryx conspersus (G. B. Sowerby I, 1833)
- Species Bostryx cordillerae (Strobel, 1874)
- Species Bostryx costellatus (Hylton Scott, 1971)
- Species Bostryx cracentis Breure, 1978
- Species Bostryx crucilineatus Weyrauch, 1967
- Species Bostryx cunyacensis Breure, 1978
- Species Bostryx curtus (F. C. L. Koch, 1844)
- Species Bostryx cuspidatus (Morelet, 1863)
- Species Bostryx cuyanus (L. Pfeiffer, 1867)
- Species Bostryx cylindricus Weyrauch, 1960
- Species Bostryx delicatulus (R. A. Philippi, 1867)
- Species Bostryx delumbis (Reeve, 1849)
- Species Bostryx demerarensis (L. Pfeiffer, 1861) accepted as Leiostracus demerarensis (L. Pfeiffer, 1861)
- Species Bostryx dendritoides (Pilsbry, 1896)
- Species Bostryx denickei (Gray, 1852)
- Species Bostryx dentaxis (Pilsbry, 1901)
- Species Bostryx depstus (Reeve, 1849)
- Species Bostryx derelictus (Broderip, 1832)
- Species Bostryx devians (Dohrn, 1863)
- Species Bostryx devillei (Deville & Hupé, 1850)
- Species Bostryx doelloi Hylton Scott, 1953
- Species Bostryx edmundi Breure & Neubert, 2008
- Species Bostryx elatus (R. A. Philippi, 1869)
- Species Bostryx emaciatus (Morelet, 1863)
- Species Bostryx endoplax Pilsbry, 1944
- Species Bostryx endoptyx Pilsbry, 1940
- Species Bostryx eremothauma (Pilsbry, 1896)
- Species Bostryx erosus (Broderip, 1832)
- Species Bostryx erythrostoma (G. B. Sowerby I, 1833)
- Species Bostryx erythrostomus (G. B. Sowerby I, 1833) accepted as Bostryx erythrostoma (G. B. Sowerby I, 1833)
- Species Bostryx extensus (F. Haas, 1955)
- Species Bostryx famatinus (Doering, 1879)
- Species Bostryx ferrugineus (Reeve, 1849)
- Species Bostryx fisheri Pilsbry, 1956
- Species Bostryx flagellatus (Pilsbry, 1896)
- Species Bostryx florezi (Weyrauch, 1967)
- Species Bostryx frederici Breure, 1978
- Species Bostryx fuligineus Breure, 1978
- Species Bostryx gayi (Rehder, 1945)
- Species Bostryx globosus Weyrauch, 1967
- Species Bostryx gracilis Weyrauch, 1967
- Species Bostryx granulatus Breure & Neubert, 2008
- Species Bostryx guttatus (Broderip, 1832)
- Species Bostryx haasi Weyrauch, 1960
- Species Bostryx hamiltoni (Reeve, 1849)
- Species Bostryx hennahi (J. E. Gray, 1828)
- Species Bostryx hepaticus (Albers, 1854)
- Species Bostryx hirsutus Breure, 1978
- Species Bostryx holostoma (L. Pfeiffer, 1846)
- Species Bostryx huanucensis Breure, 1978
- Species Bostryx huarazensis Pilsbry, 1944
- Species Bostryx huascensis (Reeve, 1848)
- Species Bostryx huayaboensis (Dautzenberg, 1902)
- Species Bostryx ignobilis (R. A. Philippi, 1867)
- Species Bostryx imeldae Weyrauch, 1958
- Species Bostryx inaquosum Breure, 1978
- Species Bostryx infundibulum (L. Pfeiffer, 1853)
- Species Bostryx iocosensis (Dautzenberg, 1901)
- Species Bostryx ireneae Araya, 2015
- Species Bostryx ischnus (Pilsbry, 1902)
- Species Bostryx izozoensis (Parodiz, 1947)
- Species Bostryx juana (Cousin, 1887)
- Species Bostryx kathiae Breure, 1978
- Species Bostryx koehleri Walther & Gryl, 2019
- Species Bostryx kugleri (Forcart, 1954)
- Species Bostryx lactifluus (L. Pfeiffer, 1857)
- Species Bostryx latecolumellaris (Weyrauch, 1967)
- Species Bostryx laurentii (G. B. Sowerby I, 1833)
- Species Bostryx lemniscatus (Deshayes, 1838)
- Species Bostryx lentiformis Breure, 1978
- Species Bostryx lesueureanus (Morelet, 1860)
- Species Bostryx leucostictus (R. A. Philippi, 1856)
- Species Bostryx lichnorum (A. d'Orbigny, 1835)
- Species Bostryx limensis (Reeve, 1849)
- Species Bostryx limonoicus (A. d'Orbigny, 1835)
- Species Bostryx lizarasoae Weyrauch, 1967
- Species Bostryx longinquus (Morelet, 1863)
- Species Bostryx longispira Weyrauch, 1960
- Species Bostryx louisae Breure, 1978
- Species Bostryx luridus (L. Pfeiffer, 1863)
- Species Bostryx martinezi (Hylton Scott, 1965)
- Species Bostryx megomphalus Pilsbry, 1944
- Species Bostryx mejillonensis (L. Pfeiffer, 1857)
- Species Bostryx mendozanus (Strobel, 1874)
- Species Bostryx metagyra Pilsbry & Olsson, 1949
- Species Bostryx metamorphus (Pilsbry, 1896)
- Species Bostryx modestus (Broderip, 1832)
- Species Bostryx mollicellus (Reeve, 1849) accepted as Bulimulus mollicellus (Reeve, 1849)
- Species Bostryx moniezi (Dautzenberg, 1897)
- Species Bostryx mordani Breure, 1978
- Species Bostryx multiconspectus Breure, 2008
- Species Bostryx multilineatus Breure, 1978
- Species Bostryx multivolvis Pilsbry, 1944
- Species Bostryx nigropileatus (Reeve, 1849)
- Species Bostryx obeliscus Zilch, 1954
- Species Bostryx obliquiportus Weyrauch, 1958
- Species Bostryx obliquistriatus (S. I. Da Costa, 1901)
- Species Bostryx olmosensis Breure, 1978
- Species Bostryx orophilus (Morelet, 1863)
- Species Bostryx ortizi Weyrauch, 1967
- Species Bostryx pastorei (Holmberg, 1912)
- Species Bostryx pauli Breure, 1978
- Species Bostryx peliostomus (L. Pfeiffer, 1867)
- Species Bostryx perforatus (F. Haas, 1951)
- Species Bostryx peristomatus (Doering, 1879)
- Species Bostryx peruvianus (Pilsbry, 1944)
- Species Bostryx pictus (L. Pfeiffer, 1855)
- Species Bostryx piuranus (Albers, 1854)
- Species Bostryx placitus Breure, 1978
- Species Bostryx planissimus Pilsbry & Olsson, 1949
- Species Bostryx platycheilus (F. Haas, 1955)
- Species Bostryx ploegerorum Breure, 1978
- Species Bostryx primigenius Breure, 2008
- Species Bostryx productus (L. Pfeiffer, 1867)
- Species Bostryx pruinosus (G. B. Sowerby I, 1833)
- Species Bostryx ptyalum (Dall, 1910)
- Species Bostryx pumilio (Rehder, 1945)
- Species Bostryx pupiformis (Broderip, 1832)
- Species Bostryx pustulosus (Broderip, 1832)
- Species Bostryx pygmaeus Weyrauch, 1960
- Species Bostryx pyrgidium (F. Haas, 1955)
- Species Bostryx raimondianus (Pilsbry, 1896)
- Species Bostryx reedi (Parodiz, 1947)
- Species Bostryx reentsi (R. A. Philippi, 1851)
- Species Bostryx rehderi Weyrauch, 1960
- Species Bostryx rhodacme (L. Pfeiffer, 1842)
- Species Bostryx rhodolarynx (Reeve, 1849)
- Species Bostryx rodriguezae Weyrauch, 1967
- Species Bostryx roselleus Miranda & Cuezzo, 2014
- Species Bostryx rouaultii (Hupé, 1854)
- Species Bostryx rudisculptus (Parodiz, 1956)
- Species Bostryx rusticellus (Morelet, 1860)
- Species Bostryx sagasteguii (F. Haas, 1966)
- Species Bostryx sandwichensis (L. Pfeiffer, 1846)
- Species Bostryx scabiosus (G. B. Sowerby I, 1833)
- Species Bostryx scalariformis (Broderip, 1832)
- Species Bostryx scalarioides (L. Pfeiffer, 1867)
- Species Bostryx scotophilus Weyrauch, 1967
- Species Bostryx scutulatus (Broderip, 1832)
- Species Bostryx serotinus (Morelet, 1860)
- Species Bostryx simpliculus (L. Pfeiffer, 1855)
- Species Bostryx solutus (Troschel, 1847)
- Species Bostryx sophieae Breure, 1979 accepted as Bostryx cordillerae (Strobel, 1874)
- Species Bostryx sordidus (R. P. Lesson, 1831)
- Species Bostryx spiculatus (Morelet, 1860)
- Species Bostryx stelzneri (Dohrn, 1875)
- Species Bostryx stenacme (L. Pfeiffer, 1857)
- Species Bostryx strobeli (Parodiz, 1956) accepted as Naesiotus strobeli (Parodiz, 1956)
- Species Bostryx styliger (H. Beck, 1837)
- Species Bostryx subcactorum (Pilsbry, 1896)
- Species Bostryx subelatus (F. Haas, 1948)
- Species Bostryx superbus Weyrauch, 1967
- Species Bostryx torallii (A. d'Orbigny, 1835)
- Species Bostryx tortoranus (Doering, 1879)
- Species Bostryx tricinctus (Reeve, 1848)
- Species Bostryx tschudii (L. Pfeiffer, 1848)
- Species Bostryx tubulatus (Morelet, 1860)
- Species Bostryx tumidulus (L. Pfeiffer, 1842)
- Species Bostryx turritus (Broderip, 1832)
- Species Bostryx tyleri (Dall, 1912)
- Species Bostryx umbilicaris (Souleyet, 1842)
- Species Bostryx umbilicatellus (Pilsbry, 1896)
- Species Bostryx valdovinosi Araya, 2015
- Species Bostryx variabilis Herm, 1970
- Species Bostryx veruculum (Morelet, 1860)
- Species Bostryx viarius (Pilsbry, 1932)
- Species Bostryx vilchezi Weyrauch, 1960
- Species Bostryx virgula (F. Haas, 1951)
- Species Bostryx virgultorum (Morelet, 1863)
- Species Bostryx vittatus (Broderip, 1832)
- Species Bostryx webbi (F. Haas, 1951)
- Species Bostryx weyrauchi Pilsbry, 1944
- Species Bostryx williamsi (L. Pfeiffer, 1858)
- Species Bostryx willinki Weyrauch, 1964
- Species Bostryx woodwardi (L. Pfeiffer, 1857)
- Species Bostryx zilchi Weyrauch, 1958
- Genus Elatibostryx Weyrauch, 1958 accepted as Bostryx Troschel, 1847
- Genus Floreziellus Weyrauch, 1967 accepted as Bostryx (Dentaxis) Pilsbry, 1902
- Genus Kionoptyx F. Haas, 1966 accepted as Bostryx (Kionoptyx) F. Haas, 1966
- Genus Naesiotellus Weyrauch, 1967 accepted as Bostryx Troschel, 1847
- Genus Peronaeus Albers, 1850 accepted as Bostryx Troschel, 1847
- Genus Phenacotaxus Dall, 1912 accepted as Bostryx (Geopyrgus) Pilsbry, 1896
- Genus Pyrgus Albers, 1850 accepted as Bostryx (Geopyrgus) Pilsbry, 1896
- Genus Scansicohlea Pilsbry, 1930 accepted as Bostryx Troschel, 1847
- Subfamily Bulimulidae incertae sedis (9)
- Subfamily Bulimulinae Tryon, 1867 (309)
- Subfamily Odontostominae Pilsbry & Vanatta, 1898 accepted as Odontostomidae Pilsbry & Vanatta, 1898
- Subfamily Peltellinae Gray, 1855 (403)
- Genus Bulimus Bruguière, 1789
- Genus Liostracus [sic] accepted as Leiostracus Albers, 1850
- Family Cyclodontinidae Salvador & Breure, 2023 (110)
- Family Liguidae Pilsbry, 1891 accepted as Orthalicidae E. von Martens, 1860
- Family Megaspiridae Pilsbry, 1904 (58)
- Family Orthalicidae E. von Martens, 1860 (108)
- Family Placostylidae Pilsbry, 1946 accepted as Placostylinae Pilsbry, 1946
- Family Simpulopsidae Schileyko, 1999 (61)
- Family Tomogeridae Jousseaume, 1877 (24)
- 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
