Classification of the genus Wellsotrochus
G. †Wellsotrochus Squires 1960
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†Wellsotrochus cyathiformis Squires 1958
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Invalid names: Kangiliacyathus groenlandicus Floris 1972 [synonym], Levicyathus cairnsi Filkorn 1994 [synonym], Wellsotrochus conicus Squires 1962 [synonym]
†Wellsotrochus discus Squires 1962
Invalid names: Kangiliacyathus Floris 1972 [synonym], Levicyathus Filkorn 1994 [synonym]