Classification of Foerste 1909
G. †Rhombopteria Jackson 1890
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Subg. †Rhombopteria (Newsomella) Foerste 1909
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†Rhombopteria (Newsomella) revoluta Winchell and Marcy 1865
†Rhombopteria (Newsomella) ulrichi Foerste 1909
G. †Strophomena Rafinesque and De Blainville 1824
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†Strophomena concordensis Foerste 1909
†Strophomena maysvillensis Foerste 1909
G. †Strophonella Hall 1879
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†Strophonella laxiplicata Foerste 1903
†Strophonella prolongata Foerste 1909
G. †Diaphorostoma Fischer 1885
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†Diaphorostoma brownsportensis Foerste 1903
†Diaphorostoma cliftonense Foerste 1909