Classification of the genus Ptychosphaera
G. †Ptychosphaera Perner 1903
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†Ptychosphaera amplifalcata Wang 1980
†Ptychosphaera carinata de Sowerby and Murchison 1839
†Ptychosphaera constricta Perner 1903
†Ptychosphaera convolutus de Koninck 1876
†Ptychosphaera obesa Wang 1980
†Ptychosphaera ouralicus Murchison et al. 1845
†Ptychosphaera thalia Hall 1859