Authors Year Title
Miller & Cline 1934 The cephalopod fauna from the Pennsylvanian Nellie Bly Formation of Oklahoma.
Journal of Paleontology, 8 (2): 171-185, pl.28; Tulsa, Oklahoma.
Miller & Cline 1934 The cephalopods of the Phosphoria Formation of Northwestern United States.
Journal of Paleontology, 8 (3): 281-302, fig.1, pl.39; Tulsa, Oklahoma.