Authors	Year	Title
House	1985	Class Cephalopoda. In: Murray,J.W. (Ed.): Atlas of invertebrate macrofossils.- 114-152, fig.6.7.1-6.7.25, pl.6.7.1-6.7.127; New York.
Miller	1938	Devonian ammonoids of America. Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.
Walcott	1884	Paleontology of the Eureka District. Mon. U.S. Geological Survey, 8: 1-298, pl.1-24; Washington.