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Mollusca (133 383)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 100)
Class Caudofoveata (143)
Class Cephalopoda (1 931)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (103 095)
Subclass Amphigastropoda † (439)
Subclass Angiogastropoda represented as Gastropoda
Subclass Apogastropoda
Subclass Caenogastropoda (53 891)
Subterclass Sorbeoconcha (147)
Superorder Hypsogastropoda
Order Architaenioglossa (4 921)
Superfamily Ampullarioidea Gray, 1824 (250)
Superfamily Cyclophoroidea J. E. Gray, 1847 (3 907)
Family Aciculidae J. E. Gray, 1850 (104)
Family Acmeidae Pollonera, 1905 accepted as Aciculidae J. E. Gray, 1850
Family Alycaeidae W. T. Blanford, 1864 accepted as Alycaeinae W. T. Blanford, 1864
Family Bolaniidae Wenz, 1915 accepted as Craspedopomatidae Kobelt & Möllendorff, 1898
Family Cochlostomatidae Kobelt, 1902 (118)
Family Craspedopomatidae Kobelt & Möllendorff, 1898 (21)
Family Cyclophoridae J. E. Gray, 1847 (1 605)
Subfamily Alycaeinae W. T. Blanford, 1864 (370)
Subfamily Craspedopomatinae Kobelt & Möllendorff, 1898 accepted as Craspedopomatidae Kobelt & Möllendorff, 1898
Subfamily Cyclophoridae incertae sedis (36)
Subfamily Cyclophorinae J. E. Gray, 1847 (1 106)
Tribe Caspicyclotini Wenz, 1938 (4)
Tribe Cyathopomatini Kobelt & Möllendorff, 1897 (134)
Tribe Cyclophorini J. E. Gray, 1847 (672)
Genus Afroditropis Bequaert & Clench, 1936 (3)
Genus Craspedotropis W. T. Blanford, 1864 (8)
Genus Crossopoma E. von Martens, 1891 (7)
Genus Cyclohelix Mörch, 1852 accepted as Cyclophorus (Cyclohelix) Mörch, 1852
Genus Cyclophorus Montfort, 1810 (213)
Subgenus Cyclophorus (Aferulus) E. von Martens, 1897 accepted as Maizania Bourguignat, 1890
Subgenus Cyclophorus (Annularia) Schumacher, 1817 accepted as Annularia Schumacher, 1817
Subgenus Cyclophorus (Craspedotropis) W. T. Blanford, 1864 accepted as Craspedotropis W. T. Blanford, 1864
Subgenus Cyclophorus (Cricophorus) Kobelt & Möllendorff, 1897 represented as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Crossopoma) E. von Martens, 1891 accepted as Crossopoma E. von Martens, 1891
Subgenus Cyclophorus (Cyclohelix) Mörch, 1852 represented as Cyclophorus Montfort, 1810
Species Cyclophorus (Cyclohelix) crocatus (Born, 1778) represented as Cyclophorus crocatus (Born, 1778)
Species Cyclophorus (Cyclohelix) denselineatus L. Pfeiffer, 1852 represented as Cyclophorus denselineatus L. Pfeiffer, 1852
Species Cyclophorus (Cyclohelix) foliaceus (Gmelin, 1791) accepted as Otopoma foliaceum (Gmelin, 1791)
Species Cyclophorus (Cyclohelix) kibleri Fulton, 1907 represented as Cyclophorus kibleri Fulton, 1907
Subspecies Cyclophorus (Cyclohelix) kibleri babiensis (Laidlaw, 1957) represented as Cyclophorus kibleri babiensis (Laidlaw, 1957)
Subspecies Cyclophorus (Cyclohelix) kibleri kibleri Fulton, 1907 represented as Cyclophorus kibleri kibleri Fulton, 1907
Subspecies Cyclophorus (Cyclohelix) kibleri simalurensis (Laidlaw, 1957) represented as Cyclophorus kibleri simalurensis (Laidlaw, 1957)
Species Cyclophorus (Cyclohelix) leai (Tryon, 1869) represented as Cyclophorus leai (Tryon, 1869)
Species Cyclophorus (Cyclohelix) nicobaricus L. Pfeiffer, 1865 represented as Cyclophorus nicobaricus L. Pfeiffer, 1865
Subgenus Cyclophorus (Cyclophoropsis) Dautzenberg, 1908 accepted as Maizania Bourguignat, 1890
Subgenus Cyclophorus (Cyclophorus) Montfort, 1810 represented as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Cyclotus) Swainson, 1840 accepted as Cyclotus Swainson, 1840
Subgenus Cyclophorus (Ditropis) W. T. Blanford, 1869 accepted as Ditropopsis E. A. Smith, 1897
Subgenus Cyclophorus (Eucyclophorus) Möllendorff, 1886 accepted as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Glossostylus) Kobelt & Möllendorff, 1897 represented as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Hijabia) Godwin-Austen, 1897 accepted as Maizania Bourguignat, 1890
Subgenus Cyclophorus (Kobeltostylus) Egorov, 2006 represented as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Lagocheilus) W. T. Blanford, 1864 accepted as Lagocheilus W. T. Blanford, 1864
Subgenus Cyclophorus (Leptopomoides) G. Nevill, 1878 accepted as Leptopomoides G. Nevill, 1878
Subgenus Cyclophorus (Litostylus) Kobelt & Möllendorff, 1897 accepted as Cyclophorus (Kobeltostylus) Egorov, 2006
Subgenus Cyclophorus (Maizania) Bourguignat, 1890 accepted as Maizania Bourguignat, 1890
Subgenus Cyclophorus (Myxostoma) Troschel, 1847 accepted as Myxostoma Troschel, 1847
Subgenus Cyclophorus (Natalia) Godwin-Austen, 1897 accepted as Maizania Bourguignat, 1890
Subgenus Cyclophorus (Ostodes) A. Gould, 1862 accepted as Ostodes A. Gould, 1862
Subgenus Cyclophorus (Papuocyclus) Ancey, 1895 accepted as Papuocyclus Ancey, 1895
Subgenus Cyclophorus (Ptychopoma) Möllendorff, 1885 accepted as Ptychopoma Möllendorff, 1885
Subgenus Cyclophorus (Salpingophorus) Kobelt & Möllendorff, 1897 represented as Cyclophorus Montfort, 1810
Subgenus Cyclophorus (Scabrina) W. T. Blanford, 1863 accepted as Scabrina W. T. Blanford, 1863
Subgenus Cyclophorus (Scabrinus) W. T. Blanford, 1863 accepted as Scabrina W. T. Blanford, 1863
Subgenus Cyclophorus (Theobaldia) P. Fischer, 1885 accepted as Cyclophorus (Theobaldius) G. Nevill, 1878
Subgenus Cyclophorus (Theobaldius) G. Nevill, 1878 accepted as Theobaldius G. Nevill, 1878
Species Cyclophorus abditus Nantarat & Panha, 2014
Species Cyclophorus abletti Thach, 2023
Species Cyclophorus aborensis Godwin-Austen, 1915
Species Cyclophorus acutiliratus Drouët, 1859 accepted as Cyclostoma rufescens G. B. Sowerby I, 1843
Species Cyclophorus acutimarginatus (G. B. Sowerby I, 1842)
Species Cyclophorus aetarum Möllendorff, 1895
Species Cyclophorus affinis Theobald, 1858
Species Cyclophorus alabastrinus (L. Pfeiffer, 1854)
Species Cyclophorus alabatensis Kobelt, 1886
Species Cyclophorus altivagus W. H. Benson, 1854
Species Cyclophorus amoenus L. Pfeiffer, 1852
Species Cyclophorus angolensis Dohrn, 1878 accepted as Maizania angolensis (Dohrn, 1878)
Species Cyclophorus anhi Thach, 2023
Species Cyclophorus annamiticus Crosse, 1867 accepted as Cyclophorus monachus (Morelet, 1866)
Species Cyclophorus annulatus L. Pfeiffer, 1852 accepted as Theobaldius annulatus (L. Pfeiffer, 1852)
Species Cyclophorus antonii Cousin, 1887 accepted as Lagocyclus antonii (Cousin, 1887)
Species Cyclophorus appendiculatus L. Pfeiffer, 1854
Species Cyclophorus aquilus (G. B. Sowerby I, 1843)
Species Cyclophorus arthriticus Theobald, 1864
Species Cyclophorus ateribalteiformis D.-N. Chen & G.-Q. Zhang, 1998
Species Cyclophorus atomus Morelet, 1882 accepted as Tornus atomus (Morelet, 1882)
Species Cyclophorus atramentarium (G. B. Sowerby I, 1843)
Species Cyclophorus aurantiacus (Schumacher, 1817)
Species Cyclophorus aurora (W. H. Benson, 1851)
Species Cyclophorus austenianus Preston, 1914
Species Cyclophorus balteatus W. H. Benson, 1857
Species Cyclophorus bankanus E. von Martens, 1867
Species Cyclophorus bapuensis Godwin-Austen, 1915
Species Cyclophorus barandae Hidalgo, 1887
Species Cyclophorus barbatus (L. Pfeiffer, 1855) accepted as Lagocheilus barbatus (L. Pfeiffer, 1855)
Species Cyclophorus batanicus Quadras & Möllendorff, 1894
Species Cyclophorus bathyrhaphe E. A. Smith, 1878 accepted as Crossopoma bathyrhaphe (E. A. Smith, 1878)
Species Cyclophorus baylei de Morgan, 1885 accepted as Lagocheilus townsendi Crosse, 1879
Species Cyclophorus beddomeanus Preston, 1914
Species Cyclophorus bellulus E. von Martens, 1865 accepted as Lagocheilus bellulus (E. von Martens, 1865)
Species Cyclophorus bellus E. von Martens, 1873 accepted as Lagocheilus bellus (E. von Martens, 1873)
Species Cyclophorus benguetensis Hidalgo, 1888
Species Cyclophorus bensoni L. Pfeiffer, 1852
Species Cyclophorus bifrons Heude, 1882 accepted as Ptychopoma chinense bifrons (Heude, 1882)
Species Cyclophorus biliratus R. H. Beddome, 1875 accepted as Craspedotropis bilirata (R. H. Beddome, 1875)
Species Cyclophorus binoyae Sykes, 1899 accepted as Lagocheilus binoyae (Sykes, 1899)
Species Cyclophorus birmanus (L. Pfeiffer, 1852)
Species Cyclophorus borealis Nantarat & Panha, 2019
Species Cyclophorus bourcieri (L. Pfeiffer, 1852) accepted as Calaperostoma bourcieri (L. Pfeiffer, 1852)
Species Cyclophorus bustoi Hidalgo, 1888
Species Cyclophorus cadiscus W. H. Benson, 1860 accepted as Theobaldius cadiscus (W. H. Benson, 1860)
Species Cyclophorus calyx W. H. Benson, 1856 accepted as Scabrina calyx (W. H. Benson, 1856)
Species Cyclophorus cambodgensis Morlet, 1885
Species Cyclophorus canaliferus (G. B. Sowerby I, 1842)
Species Cyclophorus cantori (W. H. Benson, 1851)
Species Cyclophorus caothaii Thach & F. Huber, 2020
Species Cyclophorus ceratodes Möllendorff, 1895
Species Cyclophorus ceylanicus L. Pfeiffer, 1852
Species Cyclophorus charpentieri (Mousson, 1849)
Species Cyclophorus chitwanus Greke, 2024
Species Cyclophorus choboensis Mabille, 1889
Species Cyclophorus cicatricosus Gredler, 1894
Species Cyclophorus ciliocinctus E. von Martens, 1865 accepted as Japonia ciliocincta (E. von Martens, 1865)
Species Cyclophorus cinereus Drouët, 1859 accepted as Amphicyclotus cinereus (Drouët, 1859)
Species Cyclophorus clathratus Heude, 1885 accepted as Japonia clathrata (Heude, 1885)
Species Cyclophorus clouthianus Möllendorff, 1882
Species Cyclophorus cochranei Godwin-Austen, 1889 accepted as Cyclophorus perdix borneensis (Metcalfe, 1852)
Species Cyclophorus confluens L. Pfeiffer, 1860 accepted as Cyclotus confluens (L. Pfeiffer, 1860)
Species Cyclophorus consociatus E. A. Smith, 1893
Species Cyclophorus convexiusculus (L. Pfeiffer, 1855) accepted as Chondrocyclus convexiusculus (L. Pfeiffer, 1855)
Species Cyclophorus coopertus Heude, 1888
Species Cyclophorus cornutus Kobelt, 1902
Species Cyclophorus coronensis Möllendorff, 1895
Species Cyclophorus courbeti Ancey, 1888
Species Cyclophorus cousini Jousseaume, 1884 accepted as Calaperostoma cousini (Jousseaume, 1884)
Species Cyclophorus crassalabella Godwin-Austen, 1888
Species Cyclophorus cratera W. H. Benson, 1856 accepted as Theobaldius cratera (W. H. Benson, 1856)
Species Cyclophorus crocatus (Born, 1778)
Species Cyclophorus crosseanus Hidalgo, 1866 accepted as Lagocyclus crosseanus (Hidalgo, 1866)
Species Cyclophorus cruentus E. von Martens, 1865
Species Cyclophorus cryptomphalus W. H. Benson, 1857
Species Cyclophorus cucphuongensis K. C. M. von Oheimb, 2019
Species Cyclophorus cucullatus (A. Gould, 1856)
Species Cyclophorus cumingii (G. B. Sowerby I, 1832) accepted as Calaperostoma cumingii (G. B. Sowerby I, 1832)
Species Cyclophorus cybeus (W. H. Benson, 1857)
Species Cyclophorus cytopoma W. H. Benson, 1860 accepted as Theobaldius cytopoma (W. H. Benson, 1860)
Species Cyclophorus cytora J. E. Gray, 1850 accepted as Cytora cytora (J. E. Gray, 1850)
Species Cyclophorus daoae Thach, 2023
Species Cyclophorus daraganicus Hidalgo, 1888
Species Cyclophorus debeauxi Crosse, 1864 accepted as Cyclophorus aquilus (G. B. Sowerby I, 1843)
Species Cyclophorus delavayanus Heude, 1885
Species Cyclophorus delphinulus Mousson, 1869 accepted as Filocyclus delphinulus (Mousson, 1869)
Species Cyclophorus denselineatus L. Pfeiffer, 1852
Species Cyclophorus depictus Tapparone Canefri, 1884 accepted as Lagocheilus depictus (Tapparone Canefri, 1884)
Species Cyclophorus diatretus (A. Gould, 1847) accepted as Circulus laevis (Kiener, 1838)
Species Cyclophorus dilatatus Heude, 1886
Species Cyclophorus diplochilus Möllendorff, 1894
Species Cyclophorus dodrans Mabille, 1887
Species Cyclophorus dohertyi Fulton, 1899 accepted as Lagocheilus dohertyi (Fulton, 1899)
Species Cyclophorus donghoiensis Thach & F. Huber, 2017
Species Cyclophorus dubius (Morelet, 1881)
Species Cyclophorus eburneus Tausch, 1886 † accepted as Coptocheilus supracretaceus (Tausch, 1886) †
Species Cyclophorus ectopoma Möllendorff, 1896
Species Cyclophorus edulis Mabille, 1889
Species Cyclophorus egregius E. von Martens, 1900 accepted as Cyclophorus trouiensis egregius E. von Martens, 1900
Species Cyclophorus elatior E. von Martens, 1892 accepted as Maizania elatior (E. von Martens, 1892)
Species Cyclophorus elegans Möllendorff, 1881
Species Cyclophorus esmeraldensis K. Miller, 1879 accepted as Calaperostoma esmeraldense (K. Miller, 1879)
Species Cyclophorus eudeli E. A. Smith, 1893
Species Cyclophorus everetti E. A. Smith, 1893
Species Cyclophorus exaltatus (L. Pfeiffer, 1855)
Species Cyclophorus excellens L. Pfeiffer, 1854
Species Cyclophorus eximius (Mousson, 1849) accepted as Cyclophorus rafflesii eximius (Mousson, 1849)
Species Cyclophorus expansus L. Pfeiffer, 1852
Species Cyclophorus exul W. H. Benson, 1854 accepted as Cyclophorus himalayanus L. Pfeiffer, 1852
Species Cyclophorus fargesianus Heude, 1885
Species Cyclophorus fasciatus Kobelt, 1908
Species Cyclophorus fernandezi Hidalgo, 1888
Species Cyclophorus ferruginosus Heude, 1885
Species Cyclophorus fimbriosus Möllendorff, 1885 accepted as Scabrina fimbriosa (Möllendorff, 1885)
Species Cyclophorus flavilabris W. H. Benson, 1860
Species Cyclophorus floridus (L. Pfeiffer, 1855)
Species Cyclophorus foliaceus (Gmelin, 1791) accepted as Otopoma foliaceum (Gmelin, 1791)
Species Cyclophorus formosaensis G. Nevill, 1881
Species Cyclophorus franzhuberi Thach, 2017
Species Cyclophorus friesianus Möllendorff, 1883
Species Cyclophorus frinianus Heude, 1885
Species Cyclophorus fruhstorferi Möllendorff, 1901
Species Cyclophorus fulguratus (L. Pfeiffer, 1854)
Species Cyclophorus fultoni Godwin-Austen & R. H. Beddome, 1894
Species Cyclophorus fuscicolor Godwin-Austen, 1876
Species Cyclophorus galloprovincialis (Matheron, 1843) † accepted as Palaeocyclophorus galloprovincialis (Matheron, 1843) †
Species Cyclophorus gaymansi E. von Martens, 1864
Species Cyclophorus granum Morelet, 1881
Species Cyclophorus haematomma L. Pfeiffer, 1863 accepted as Lagocyclus haematomma (L. Pfeiffer, 1863)
Species Cyclophorus hangmonensis Raheem & S. Schneider, 2017 †
Species Cyclophorus haughtoni Theobald, 1858
Species Cyclophorus hebereri B. Rensch, 1933
Species Cyclophorus heberti Roule, 1884 † accepted as Palaeocyclophorus heberti (Roule, 1884) †
Species Cyclophorus hejingi Thach & F. Huber, 2020
Species Cyclophorus heliciformis (Matheron, 1832) † accepted as Palaeocyclophorus heliciformis (Matheron, 1832) †
Species Cyclophorus herklotsi E. von Martens, 1861
Species Cyclophorus hidalgoi Crosse, 1866 accepted as Calaperostoma hidalgoi (Crosse, 1866)
Species Cyclophorus hildebrandti E. von Martens, 1878 accepted as Maizania hildebrandti (E. von Martens, 1878)
Species Cyclophorus himalayanus L. Pfeiffer, 1852
Species Cyclophorus hirasei Pilsbry, 1901
Species Cyclophorus hirsutus Möllendorff, 1884 accepted as Scabrina hirsuta (Möllendorff, 1884)
Species Cyclophorus hispidulus W. T. Blanford, 1863 accepted as Scabrina hispidula (W. T. Blanford, 1863)
Species Cyclophorus horridulum (Morelet, 1882)
Species Cyclophorus huberi Thach, 2016
Species Cyclophorus hunganhi Thach & F. Huber, 2020
Species Cyclophorus ibyatensis L. Pfeiffer, 1854
Species Cyclophorus ignilabris Möllendorff, 1901
Species Cyclophorus implicatus Bavay & Dautzenberg, 1909
Species Cyclophorus indicus (Deshayes, 1832)
Species Cyclophorus intercedens Kobelt, 1886 accepted as Cyclophorus woodianus (I. Lea, 1840)
Species Cyclophorus intermedius E. von Martens, 1897 accepted as Maizania elatior (E. von Martens, 1892)
Species Cyclophorus involvulus (O. F. Müller, 1774)
Species Cyclophorus jerdoni (W. H. Benson, 1851)
Species Cyclophorus johnabbasi Thach, 2020
Species Cyclophorus jourdyi Morlet, 1886
Species Cyclophorus khasiensis G. Nevill, 1878 accepted as Cyclophorus siamensis (G. B. Sowerby I, 1850)
Species Cyclophorus khongensis Thach & F. Huber, 2017
Species Cyclophorus kibleri Fulton, 1907
Species Cyclophorus kibonotoensis d'Ailly, 1910 accepted as Maizania hildebrandti kibonotoensis (d'Ailly, 1910)
Species Cyclophorus kikaiensis Pilsbry, 1902
Species Cyclophorus kinabaluensis E. A. Smith, 1895
Species Cyclophorus kintanus de Morgan, 1885 accepted as Pterocyclos kintanum (de Morgan, 1885)
Species Cyclophorus klobukowskii Morlet, 1885 accepted as Lagocheilus klobukowskii (Morlet, 1885)
Species Cyclophorus koboensis Godwin-Austen, 1915
Species Cyclophorus kubarensis T. Hirano & Matsuoka, 2024 †
Species Cyclophorus kubaryi Möllendorff, 1895 accepted as Papuocyclus kubaryi (Möllendorff, 1895)
Species Cyclophorus labiosus (L. Pfeiffer, 1854)
Species Cyclophorus lahatensis de Morgan, 1886 accepted as Opisthoporus lahatensis (de Morgan, 1886)
Species Cyclophorus landesi Morlet, 1885 accepted as Lagocheilus landesi (Morlet, 1885)
Species Cyclophorus laomontanus L. Pfeiffer, 1863 accepted as Lagocheilus laomontanus (L. Pfeiffer, 1863)
Species Cyclophorus layardi H. Adams, 1868 accepted as Theobaldius layardi (H. Adams, 1868)
Species Cyclophorus leai (Tryon, 1869)
Species Cyclophorus leonensis Morelet, 1873 accepted as Maizaniella leonensis (Morelet, 1873)
Species Cyclophorus leucostomus (L. Pfeiffer, 1852)
Species Cyclophorus lilliputianus Morelet, 1873 accepted as Maizaniella lilliputiana (Morelet, 1873)
Species Cyclophorus linguiferus (G. B. Sowerby I, 1843)
Species Cyclophorus lingulatus (G. B. Sowerby I, 1843)
Species Cyclophorus liratula Preston, 1909 accepted as Scabrina liratula (Preston, 1909)
Species Cyclophorus liratus Drouët, 1859 accepted as Cyclostoma (Cyclotus) martinicense Shuttleworth, 1857
Species Cyclophorus loloensis Heude, 1890
Species Cyclophorus lowi de Morgan, 1885 accepted as Cyclophorus aurantiacus (Schumacher, 1817)
Species Cyclophorus luneli [sic] † accepted as Palaeocyclophorus lunelii (Matheron, 1843) †
Species Cyclophorus luridus (L. Pfeiffer, 1852)
Species Cyclophorus magilensis Craven, 1880 accepted as Maizania magilensis (Craven, 1880)
Species Cyclophorus malayanus (W. H. Benson, 1852)
Species Cyclophorus malayanus de Morgan, 1885 accepted as Cyclophorus aurantiacus (Schumacher, 1817)
Species Cyclophorus malleatus W. T. Blanford & H. F. Blanford, 1861 accepted as Lagocheilus malleatus (W. T. Blanford & H. F. Blanford, 1861)
Species Cyclophorus mansuyi Dautzenberg & H. Fischer, 1908
Species Cyclophorus martensianus Möllendorff, 1874
Species Cyclophorus martinezi Hidalgo, 1866 accepted as Daronia martinezi (Hidalgo, 1866)
Species Cyclophorus massiei Morlet, 1891
Species Cyclophorus mediastinus Heude, 1885 accepted as Ptychopoma mediastinum (Heude, 1885)
Species Cyclophorus menkeanus (R. A. Philippi, 1847)
Species Cyclophorus metcalfei Issel, 1874 accepted as Japonia metcalfei (Issel, 1874)
Species Cyclophorus mexicanus (Menke, 1830) accepted as Aperostoma mexicanum mexicanum (Menke, 1830)
Species Cyclophorus microscopicus Morelet, 1881
Species Cyclophorus minimus Melvill & Ponsonby, 1898 accepted as Afrocyclus isipingoensis (Sturany, 1898)
Species Cyclophorus moellendorffi Schmacker & O. Boettger, 1891
Species Cyclophorus molleri Nobre, 1886 accepted as Afroditropis molleri (Nobre, 1886)
Species Cyclophorus monachus (Morelet, 1866)
Species Cyclophorus muii Thach, 2023
Species Cyclophorus muspratti Godwin-Austen & R. H. Beddome, 1894
Species Cyclophorus nagaensis Godwin-Austen & R. H. Beddome, 1894
Species Cyclophorus nankingensis Heude, 1882 accepted as Cyclophorus martensianus nankingensis Heude, 1882
Species Cyclophorus neuvillei Magne, 1936 †
Species Cyclophorus nevillei [sic] accepted as Cyclophorus nevilli E. von Martens, 1887
Species Cyclophorus nevilli E. von Martens, 1887 accepted as Cyclophorus aurantiacus (Schumacher, 1817)
Species Cyclophorus ngankingensis Heude, 1882
Species Cyclophorus ngheanensis Thach & F. Huber, 2018
Species Cyclophorus niahensis Godwin-Austen, 1889
Species Cyclophorus nicobaricus L. Pfeiffer, 1865
Species Cyclophorus nigricans (L. Pfeiffer, 1862)
Species Cyclophorus nigrofasciatus K. Miller, 1879 accepted as Calaperostoma nigrofasciatum (K. Miller, 1879)
Species Cyclophorus nilagiricus (W. H. Benson, 1852)
Species Cyclophorus oakesi Godwin-Austen, 1915 accepted as Lagocheilus oakesi Godwin-Austen, 1918
Species Cyclophorus occultus Nantarat & Panha, 2019
Species Cyclophorus ophis Hanley, 1876
Species Cyclophorus orbignyi Ancey, 1892 accepted as Calaperostoma orbignyi (Ancey, 1892)
Species Cyclophorus orthostylus Möllendorff, 1898
Species Cyclophorus ouwensianus van Heurn & Paravicini, 1922
Species Cyclophorus palawanensis (E. A. Smith, 1893)
Species Cyclophorus pallens Heude, 1882
Species Cyclophorus papilio L. Pfeiffer, 1861 accepted as Ptychopoma papilio (L. Pfeiffer, 1861)
Species Cyclophorus paracucphuongensis K. C. M. von Oheimb, 2019
Species Cyclophorus parapsis W. H. Benson, 1853 accepted as Theobaldius parapsis (W. H. Benson, 1853)
Species Cyclophorus parma W. H. Benson, 1856 accepted as Theobaldius parma (W. H. Benson, 1856)
Species Cyclophorus parvus (G. B. Sowerby I, 1843) accepted as Lagocheilus parvus (G. B. Sowerby I, 1843)
Species Cyclophorus patens W. T. Blanford, 1862
Species Cyclophorus paviei Morlet, 1885
Species Cyclophorus pealianus G. Nevill, 1877
Species Cyclophorus pearsoni (W. H. Benson, 1851)
Species Cyclophorus pellati Roman, 1899 † accepted as Palaeocyclophorus pellati (Roman, 1899) †
Species Cyclophorus pellicosta Möllendorff, 1882 accepted as Lagocheilus pellicosta (Möllendorff, 1882)
Species Cyclophorus perdix (Broderip & G. B. Sowerby I, 1830)
Species Cyclophorus pernobilis A. Gould, 1843 accepted as Cyclophorus aurantiacus pernobilis (A. Gould, 1843)
Species Cyclophorus pfeifferi Reeve, 1861 accepted as Cyclophorus expansus L. Pfeiffer, 1852
Species Cyclophorus phayrei (Theobald, 1870) accepted as Lagocheilus phayrei (Theobald, 1870)
Species Cyclophorus philippinarum (G. B. Sowerby I, 1842)
Species Cyclophorus phlegethon Godwin-Austen, 1889 accepted as Cyclophorus perdix borneensis (Metcalfe, 1852)
Species Cyclophorus phongnhakebangensis P. V. von Oheimb, 2019
Species Cyclophorus phukhetensis Thach & F. Huber, 2020
Species Cyclophorus picturatus (L. Pfeiffer, 1854)
Species Cyclophorus pinnulifer W. H. Benson, 1857 accepted as Scabrina pinnulifer (W. H. Benson, 1857)
Species Cyclophorus plateni Dohrn, 1889
Species Cyclophorus pliciferus E. von Martens, 1900
Species Cyclophorus poeciloneurus Godwin-Austen & R. H. Beddome, 1894
Species Cyclophorus polynema (L. Pfeiffer, 1855)
Species Cyclophorus polystictus Möllendorff, 1901
Species Cyclophorus ponderosus (L. Pfeiffer, 1853) accepted as Amphicyclotus ponderosus (L. Pfeiffer, 1853)
Species Cyclophorus porphyriticus (W. H. Benson, 1851)
Species Cyclophorus preussi E. von Martens, 1892 accepted as Maizaniella preussi (E. von Martens, 1892)
Species Cyclophorus prietoi Hidalgo, 1888
Species Cyclophorus primaevus (F. Sandberger, 1870) †
Species Cyclophorus psilomitus (L. Pfeiffer, 1853) accepted as Liracyclotus psilomitus (L. Pfeiffer, 1853)
Species Cyclophorus pterocyclus Möllendorff, 1895
Species Cyclophorus punctatulus Heude, 1885
Species Cyclophorus punctatus (Grateloup, 1840)
Species Cyclophorus pyrostoma Möllendorff, 1882
Species Cyclophorus pyrotrema W. H. Benson, 1854
Species Cyclophorus quadrasi Hidalgo, 1888
Species Cyclophorus rafflesii (Broderip & G. B. Sowerby I, 1830)
Species Cyclophorus rangunensis Kobelt, 1908
Species Cyclophorus raripilus Morelet, 1881
Species Cyclophorus reevei Hidalgo, 1888
Species Cyclophorus regelspergeri de Morgan, 1885 accepted as Spiraculum regelspergeri (de Morgan, 1885)
Species Cyclophorus renkeri Thach & F. Huber, 2020
Species Cyclophorus robusta Y.-T. Li, 1984 † accepted as Cyclophorus robustus Y.-T. Li, 1984 †
Species Cyclophorus robustus Y.-T. Li, 1984 †
Species Cyclophorus romblonensis Hidalgo, 1888
Species Cyclophorus rosenbergi S. I. Da Costa, 1898 accepted as Calaperostoma rosenbergi (S. I. Da Costa, 1898)
Species Cyclophorus rugosus Putzeys, 1899 accepted as Maizania elatior (E. von Martens, 1892)
Species Cyclophorus salemensis R. H. Beddome, 1875 accepted as Craspedotropis salemensis (R. H. Beddome, 1875)
Species Cyclophorus salleanus E. von Martens, 1865 accepted as Aperostoma mexicanum salleanum (E. von Martens, 1865)
Species Cyclophorus saturnus L. Pfeiffer, 1862
Species Cyclophorus scalariformis Pease, 1865 accepted as Palaina scalariformis (Pease, 1865)
Species Cyclophorus schepmani Laidlaw, 1957
Species Cyclophorus schwabei Thach & F. Huber, 2020
Species Cyclophorus scissimargo W. H. Benson, 1856 accepted as Lagocheilus scissimargo (W. H. Benson, 1856)
Species Cyclophorus scurra W. H. Benson, 1857
Species Cyclophorus semisulcatus (G. B. Sowerby I, 1843)
Species Cyclophorus semperi Kobelt, 1886
Species Cyclophorus sericatus Ancey, 1888
Species Cyclophorus sericinus Quadras & Möllendorff, 1894
Species Cyclophorus serratizona Hanley & Theobald, 1876
Species Cyclophorus sexfilaris Heude, 1882 accepted as Lagocheilus sexfilaris (Heude, 1882)
Species Cyclophorus siamensis (G. B. Sowerby I, 1850)
Species Cyclophorus sidiensis Godwin-Austen, 1915
Species Cyclophorus smithi Hidalgo, 1890
Species Cyclophorus solarium (Matheron, 1843) † accepted as Palaeocyclophorus solarium (Matheron, 1843) †
Species Cyclophorus sollieri Roule, 1884 † accepted as Cyclophorus galloprovincialis (Matheron, 1843) †
Species Cyclophorus soloensis Heude, 1886
Species Cyclophorus songmaensis Morlet, 1891
Species Cyclophorus sowerbyi Hidalgo, 1888
Species Cyclophorus speciosus (R. A. Philippi, 1847)
Species Cyclophorus spironema (L. Pfeiffer, 1855)
Species Cyclophorus stenomphalus (L. Pfeiffer, 1846)
Species Cyclophorus stenostoma (G. B. Sowerby I, 1843) accepted as Theobaldius stenostoma (G. B. Sowerby I, 1843)
Species Cyclophorus stevenabbasorum Thach, 2016
Species Cyclophorus stungtrengensis Thach & F. Huber, 2018
Species Cyclophorus subcarinatus Möllendorff, 1882
Species Cyclophorus subfloridus Ancey, 1888
Species Cyclophorus sublaevigatus W. T. Blanford, 1869
Species Cyclophorus subplicatus R. H. Beddome, 1875 accepted as Theobaldius subplicatus (R. H. Beddome, 1875)
Species Cyclophorus sumatrensis (L. Pfeiffer, 1855)
Species Cyclophorus szechwanensis Yen, 1939
Species Cyclophorus taeniatus (L. Pfeiffer, 1855)
Species Cyclophorus takumisaitoi T. Hirano, 2019
Species Cyclophorus talboti Godwin-Austen, 1889
Species Cyclophorus telifer Möllendorff, 1889
Species Cyclophorus tenebricosus (A. Adams & Reeve, 1848) accepted as Lagocheilus tenebricosus (A. Adams & Reeve, 1848)
Species Cyclophorus tetrachrous Mabille, 1887
Species Cyclophorus thachi F. Huber, 2020
Species Cyclophorus thainguyenensis Thach, 2023
Species Cyclophorus thakhekensis Thach & F. Huber, 2018
Species Cyclophorus theobaldianus W. H. Benson, 1857
Species Cyclophorus theodori Ancey, 1888
Species Cyclophorus thersites (Shuttleworth, 1852)
Species Cyclophorus tigrinus (G. B. Sowerby I, 1843)
Species Cyclophorus tomotrema W. H. Benson, 1857 accepted as Lagocheilus tomotremus (W. H. Benson, 1857)
Species Cyclophorus tornatus Morlet, 1893
Species Cyclophorus translucens Heude, 1890
Species Cyclophorus triliratus L. Pfeiffer, 1852 accepted as Japonia trilirata (L. Pfeiffer, 1852)
Species Cyclophorus trochiformis Kobelt, 1884
Species Cyclophorus trochulus E. von Martens, 1867 accepted as Japonia trochulus (E. von Martens, 1867)
Species Cyclophorus trouiensis Wattebled, 1886
Species Cyclophorus tryblium W. H. Benson, 1854
Species Cyclophorus tuanhae Thach, 2023
Species Cyclophorus tuba (G. B. Sowerby I, 1842) accepted as Cyclophorus perdix tuba (G. B. Sowerby I, 1842)
Species Cyclophorus turbinatus (L. Pfeiffer, 1846) accepted as Lagocheilus turbinatum (L. Pfeiffer, 1846)
Species Cyclophorus turgidus L. Pfeiffer, 1852
Species Cyclophorus turgidus L. Pfeiffer, 1851 accepted as Cyclophorus turgidus L. Pfeiffer, 1852
Species Cyclophorus umbilicatus Kobelt, 1886 accepted as Lagocheilus umbilicatus (Kobelt, 1886)
Species Cyclophorus underwoodi S. I. Da Costa, 1900 accepted as Barbacyclus underwoodi (S. I. Da Costa, 1900)
Species Cyclophorus unicus Mabille, 1887
Species Cyclophorus upolensis Mousson, 1865 accepted as Ostodes upolensis (Mousson, 1865)
Species Cyclophorus validus (G. B. Sowerby I, 1842)
Species Cyclophorus vandellii Nobre, 1886 accepted as Thomeomaizania vandellii (Nobre, 1886)
Species Cyclophorus vasconesi Jousseaume, 1897 accepted as Lagocyclus vasconesi (Jousseaume, 1897)
Species Cyclophorus vesconesi Jousseaume, 1897 accepted as Amphicyclotus vesconesi (Jousseaume, 1897)
Species Cyclophorus vescus Sykes, 1899 accepted as Lagocheilus vescus (Sykes, 1899)
Species Cyclophorus volkensi E. von Martens, 1895 accepted as Maizania volkensi (E. von Martens, 1895)
Species Cyclophorus volvulus (O. F. Müller, 1774)
Species Cyclophorus vonhaiensis Thach, 2023
Species Cyclophorus wahlbergi (W. H. Benson, 1852) accepted as Maizania wahlbergi (W. H. Benson, 1852)
Species Cyclophorus wetaranus F. Haas, 1912 accepted as Cyclotus politus (G. B. Sowerby I, 1843)
Species Cyclophorus woodianus (I. Lea, 1840)
Species Cyclophorus youngi Yen, 1936 †
Species Cyclophorus zebra (Grateloup, 1840)
Species Cyclophorus zebrinus (W. H. Benson, 1836)
Genus Cyclosurus Morelet, 1881 (1)
Genus Dasytherion Mabille, 1887 accepted as Scabrina W. T. Blanford, 1863
Genus Dermatocera H. Adams & A. Adams, 1855 accepted as Leptopoma L. Pfeiffer, 1847
Genus Ditropiphorus H. Fukuda, 2000 accepted as Ditropopsis E. A. Smith, 1897
Genus Ditropis W. T. Blanford, 1869 accepted as Ditropopsis E. A. Smith, 1897
Genus Ditropopsis E. A. Smith, 1897 (52)
Genus Elgonocyclus Verdcourt, 1982 (1)
Genus Eucyclophorus Möllendorff, 1886 accepted as Cyclophorus Montfort, 1810
Genus Japonia A. Gould, 1859 (55)
Genus Lagocheilus W. T. Blanford, 1864 (106)
Genus Laochilus W. T. Blanford, 1864 accepted as Lagocheilus W. T. Blanford, 1864
Genus Leptopoma L. Pfeiffer, 1847 (126)
Genus Leptopomatoides E. von Martens, 1880 accepted as Leptopomoides G. Nevill, 1878
Genus Leptopomoides G. Nevill, 1878 (8)
Genus Leucoptychia Crosse, 1878 accepted as Leptopoma (Leucoptychia) Crosse, 1878
Genus Litostylus Kobelt & Möllendorff, 1897 accepted as Cyclophorus (Kobeltostylus) Egorov, 2006
Genus Micraulax Theobald, 1876 (2)
Genus Montanopoma J. Stanisic, 2010 (5)
Genus Myxostoma Troschel, 1847 (3)
Genus Otopoma J. E. Gray, 1850 (8)
Genus Owengriffithsius K. C. Emberton, 2002 (6)
Genus Papuocyclus Ancey, 1895 (1)
Genus Pilosphaera Y.-C. Lee, K.-U. Lue & W.-L. Wu, 2008 (2)
Genus Ptychapoma Möllendorff, 1885 accepted as Ptychopoma Möllendorff, 1885
Genus Ptychopoma Möllendorff, 1885 (22)
Genus Rhytidorhaphe Möllendorff, 1897 accepted as Papuocyclus Ancey, 1895
Genus Scabrina W. T. Blanford, 1863 (22)
Genus Theobaldius G. Nevill, 1878 (21)
Tribe Cyclotini L. Pfeiffer, 1853 (163)
Tribe Pterocyclini Kobelt & Möllendorff, 1897 (126)
Genus Aulopoma Troschel, 1847 (4)
Genus Pholeoteras Sturany, 1904 (3)
Subfamily Ferussininae Wenz, 1923 (1915) † (8)
Subfamily Platyrhaphidinae Páll-Gergely, 2024 (76)
Subfamily Spirostomatinae Tielecke, 1940 (4)
Genus Allardia Nicolas, 1898 †
Genus Diaspira Soós, 1911 accepted as Ditropopsis E. A. Smith, 1897
Genus Eotrichophorus D. A. Bullis, Herhold, Czekanski-Moir, Grimaldi & Rundell, 2020 † (2)
Genus Lagochilus P. Fischer, 1885 accepted as Lagocheilus W. T. Blanford, 1864
Genus Lagochilus W. T. Blanford, 1864 accepted as Lagocheilus W. T. Blanford, 1864
Genus Perissocyclos D. A. Bullis, Herhold, Czekanski-Moir, Grimaldi & Rundell, 2020 † (1)
Genus Strophites J. W. Dawson, 1880 † accepted as Dendropupa R. Owen, 1859 †
Genus Trotopyrgula X.-H. Yu, 1987 † (2)
Family Cytoridae Climo, 1969 accepted as Liareinae A. W. B. Powell, 1946
Family Dicristidae A. N. Golikov & Starobogatov, 1975 accepted as Neocyclotidae Kobelt & Möllendorff, 1897
Family Diplommatinidae L. Pfeiffer, 1856 (1 026)
Family Ferussinidae Wenz, 1923 (1915) † accepted as Ferussininae Wenz, 1923 (1915) †
Family Hainesiidae Thiele, 1929 (220)
Family Lagocheilidae Stoliczka, 1872 accepted as Cyclophoridae J. E. Gray, 1847
Family Maizaniidae Tielecke, 1940 (40)
Family Megalomastomatidae W. T. Blanford, 1864 (100)
Family Megalostomatidae [sic] accepted as Megalomastomatidae W. T. Blanford, 1864
Family Neocyclotidae Kobelt & Möllendorff, 1897 (242)
Family Pollicariidae Thiele, 1929 (6)
Family Pupinidae L. Pfeiffer, 1853 (422)
Family Strophostomatidae Wenz, 1915 † accepted as Ferussininae Wenz, 1923 (1915) †
Genus Carinomphalus W. Yü, 1974 † (1)
Genus Diplommoptychia Maillard, 1884 †
Genus Loriolina Huckriede, 1967 † (1)
Genus Maillardinus Bandel, 1991 † (1)
Superfamily Viviparoidea Gray, 1847 (764)
Order Caenogastropoda incertae sedis (7 751)
Order Littorinimorpha (17 231)
Order Neogastropoda (23 841)
Order Stenoglossa accepted as Neogastropoda
Subclass Gastropoda incertae sedis (313)
Subclass Heterobranchia (39 230)
Subclass Neomphaliones accepted as Vetigastropoda
Subclass Neritimorpha (1 916)
Subclass Orthogastropoda represented as Gastropoda
Subclass Patellogastropoda (517)
Subclass Prosobranchia
Subclass Psilogastropoda represented as Gastropoda
Subclass Vetigastropoda (6 789)
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 (1 381)
Class Polyplaxiphora accepted as Polyplacophora
Class Rostroconchia † (64)
Class Scaphopoda (754)
Class Solenoconchia accepted as Scaphopoda
Class Solenogastres (313)
Subclass Chaetodermomorpha accepted as Caudofoveata