Classification of the genus Zygospira
G. †Zygospira Hall 1862
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†Zygospira deflecta Hall 1847
†Zygospira fallax Marek and Havlíček 1967
†Zygospira gutta Oraspold 1956
†Zygospira kentuckiensis Hall and Clarke 1895
†Zygospira lebanonensis Cooper 1956
†Zygospira matutina Cooper 1956
†Zygospira meafordensis Foerste 1924
†Zygospira modesta Hall 1847
†Zygospira resupinata Wang 1949
†Zygospira resupinata multicostata Howe 1965
†Zygospira sulcata Howe 1965