Authors Year Title
Clarke 1899a The Naples  fauna (fauna with Manticoceras intumescens) in Western New York.
New York State Museum Annual Report, 50: 31-161, fig.1-106, pl.1-9; Albany.
Hall 1879 Descriptions of the Gasteropoda, Pteropoda and Cephalopoda of the Upper Helderberg, Hamilton, Portage and Chemung Groups.
Paleontology of New York, 5 (2): 1-492, pl.1-113; Albany.
Miller 1938 Devonian ammonoids of America.
Special Papers, Geological Society of America, 14: 1-262, fig.1-41, pl.1-39; Baltimore.