Classification of Cocks 2014
G. †Dalmanella Hall and Clarke 1892
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†Dalmanella testudinaria Dalman 1828
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Invalid names: Dalmanella biconvexa Williams 1951 [synonym]
G. †Dolerorthis Schuchert and Cooper 1931
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†Dolerorthis intercostata de Sowerby and Murchison 1839
G. †Onniella Bancroft 1928
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G. †Sulevorthis Jaanusson and Bassett 1993
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†Sulevorthis humilidorsatus Wright 1964
G. †Chonetoidea Jones 1928
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G. †Eostropheodonta Bancroft 1949
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†Eostropheodonta hirnantensis M'Coy 1851
†Eostropheodonta portfieldensis Cocks 2014
Fm. †Sowerbyellidae Opik 1930
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Subg. †Leangella (Leangella) Opik 1933
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†Leangella (Leangella) sholeshookensis Jones 1928
Subg. †Eoplectodonta (Eoplectodonta) Kozlowski 1929
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†Eoplectodonta (Eoplectodonta) rhombica M'Coy 1852
†Leptaena (Leptaena) rugosa Dalman 1828
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Invalid names: Leptaena (Leptaena) martinensis Cocks 1968 [synonym]
Subg. †Eopholidostrophia (Megapholidostrophia) Rong et al. 2013
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