Classification of the genus Colostracon

G. †Colostracon Hamlin 1884
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Subg. †Colostracon (Ovactaeonina) Cossmann 1895
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Ovactaeonina abdominiformis Schröder 1995
Ovactaeonina gracilis Assmann 1924
Ovactaeonina kalchreuthensis Gründel and Nützel 1998
Ovactaeonina malzi Schröder 1995
Ovactaeonina pommerana Grundel 1999
Ovactaeonina scalaria Münster 1841
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Invalid names: Actaeonina subscalaris Laube 1868 [synonym], Oliva alpina Klipstein 1843 [synonym], Tornatella abbreviata Klipstein 1843 [synonym]