(ofPlatyceras latum Keyes, 1888 †)Keyes C.R. (1888). On the Attachment of Platyceras to Palæocrinoids, and Its Effects in Modifying the Form of the Shell. <em>Proceedings of the American Philosophical Society.</em> 25(128): 231-243. page(s): 242, fig. 10, 11 [details]
original description(ofPlatyceras latum Keyes, 1888 †)Keyes C.R. (1888). On the Attachment of Platyceras to Palæocrinoids, and Its Effects in Modifying the Form of the Shell. <em>Proceedings of the American Philosophical Society.</em> 25(128): 231-243. page(s): 242, fig. 10, 11 [details]