Cephalopoda - Ammonitida - Collignoniceratidae
Alternative combination: Prionotropis branneri
Synonyms: Prionotropis casperi Anderson 1958, Prionotropis cristatus Billinghurst 1927
Full reference: F. M. Anderson. 1902. Cretaceous Deposits of the Pacific Coast. Proceedings of the California Academy of Sciences 2(1):1-155
Belongs to Subprionocyclus according to W. J. Kennedy and A. S. Gale 2015
See also Anderson 1902, Anderson 1958, Billinghurst 1927, Matsumoto 1959, Wilmsen and Nagm 2014 and Wright 1979
Sister taxa: Subprionocyclus hitchinensis, Subprionocyclus neptuni, Subprionocyclus normalis, Oregoniceras phoenixense, Oregoniceras jacksonense, Oregoniceras condoni, Oregoniceras argonautarum, Oregoniceras multicostum
Average measurements (in mm): shell diameter 64.0
Distribution:
• Cretaceous of France (1 collection), Germany (1), the United Kingdom (4), United States (2: California, Oregon)
Total: 8 collections including 10 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.