Classification of the family Retusidae

Fm. Retusidae Thiele 1925
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G. Retusa Brown 1827
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Subg. Retusa (Coleophysis) Fischer 1883
Subg. Retusa (Cylichnina) Monterasato 1884
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Cylichnina coelata Deshayes 1862
Cylichnina tantilla Anderson and Hanna 1925
Cylichnina turneri Effinger 1938
Retusa (Cylichnina) conutus Deshayes 1824
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Invalid names: Cylichna sthillairii Lea 1833 [synonym]
Retusa bizona Adams 1850
Retusa claibornensis Aldrich 1911
Retusa obtusa Montagu 1808
Retusa recta Eames 1952
Retusa truncatula Bruguiere 1792
Retusa yaquensis Maury 1917
G. Rhizorus Montfort 1810
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Rhizorus pakistanicus Eames 1952
G. Sulcoretusa Burch 1945
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Sulcoretusa israelskyi Addicott 1970
Sulcoretusa sulcata d'Orbigny 1841
Sulcoretusa sulcata lipara Woodring 1928
G. Volvulella Newton 1891
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Subg. Volvulella (Volvulella) Newton 1891
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Volvulella (Volvulella) micratracta Brown and Pilsbry 1913
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Invalid names: Volvula cercadensis Van Winkle 1921 [synonym], Volvula cylindrica Gabb 1873 [synonym]
Volvulella cannada Ihering 1907
Volvulella cylindrica Carpenter 1865
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Invalid names: Volvulella cooperi Dall 1919 [synonym]
Volvulella gluma Keen 1943
Volvulella joaquinensis Addicott 1970
Volvulella meyer Cossman 1893
Volvulella oxyacrum Cossmann 1889
Volvulella persimilis Mörch 1875