Classification of Cocks 1978
G. †Dalmanella Hall and Clarke 1892
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†Dalmanella jonesi Davidson 1883
†Dalmanella unguis Sowerby and Murchison 1839
G. †Dactylogonia Ulrich and Cooper 1942
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†Dactylogonia callawayiana Davidson 1883
G. †Megastrophia Caster 1939
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Subg. †Megastrophia (Protomegastrophia) Caster 1939
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†Megastrophia (Protomegastrophia) undata McCoy 1846
G. †Pholidostrophia Hall and Clarke 1892
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Subg. †Pholidostrophia (Eopholidostrophia) Harper et al. 1967
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Subg. †Strophonella (Eostrophonella) Williams 1950
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†Strophonella (Eostrophonella) polita Bancroft 1949
†Glyptorthis lapworthi Davidson 1883
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Invalid names: Glyptorthis biornata Reed 1945 [synonym]