E. D. Cope. 1870. On some species of Pythonomorpha from the Cretaceous beds of Kansas and New Mexico. Proceedings of the American Philosophical Society 11(81):574-584
Bibliographie (1)
E. D. Cope. 1870. On some species of Pythonomorpha from the Cretaceous beds of Kansas and New Mexico. Proceedings of the American Philosophical Society 11(81):574-584