Authors Year Title
Miller 1936a Iowa Devonian ammonoids.
Proceedings of the Iowa Academy of Science, 43: 231-234, pl.1; Iowa City.
Miller 1936b Devonic Ammonoids of Iowa.
Pan-Amer. Geologist, 65: 336-338; Des Moines.
Miller 1938 Devonian ammonoids of America.
Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.
Xu & Wei 1977 Fossil Atlas of South-Central China, part 2, Cephalopoda. [In Chinese.]
Yichang Institute of Geology and Mineral Resources 1977:   p.537-582, pl.204-218, (Geological Publishing House).