This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
E. D. Cope, 1870 - - Synopsis of the Extinct Batrachia, Reptilia and Aves of North America. Part III. Transactions of the American Philosophical Society, New Series (14), 235-252 (serial monograph, English)
E. D. Cope, 1868 - [A new genus of Chelonia from New Jersey] - Proceedings of the Academy of Natural Sciences of Philadelphia (20), 147- (journal article, English)