Classification of Schuchert and Cooper 1930
G. †Cyclopyge Hawle and Corda 1847
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†Cyclopyge insolens Schuchert and Cooper 1930
G. †Ptychoglyptus Willard 1928
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†Ptychoglyptus bellarugosus Schuchert and Cooper 1930
G. †Plectatrypa Schuchert and Cooper 1930
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†Plectatrypa gaspeensis Schuchert and Cooper 1930