Authors	Year	Title
Furnish & Knapp	1966	Lower Pennsylvanian fauna from Eastern Kentucky; Part 1, Ammonoids. Journal of Paleontology, 40: 296-308, fig.1-5, pl.35; Tulsa, Okla.
Miller & Gurley	1896	New species of Palaeozoic invertebrates from Illinois and other states. Bulletin of the Illinois State Museum of Natural History, 11: 1-50, pl.1-5; Springfield, IL.
Smith	1903	The Carboniferous Ammonoids of America. Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.