Cephalopoda - Ammonitida - Polymorphitidae
Synonym: Cycloceras Hyatt 1867
Full reference: A. Hyatt. 1900. Cephalopoda. Textbook of Palaeontology 1:502-604
Parent taxon: Tropidoceratinae according to M. K. Howarth 2013
See also Bremer 1965, Donovan and Surlyk 2003, Frebold 1970, Meister and Friebe 2003, Sepkoski 2002, Smith and Tipper 1996 and Thomson and Smith 1992
Sister taxa: Catriceras, Dayiceras, Paratropidoceras, Tropidoceras
Subtaxa: Acanthopleuroceras arietiforme Acanthopleuroceras carinatum Acanthopleuroceras inflatum Acanthopleuroceras lepidum Acanthopleuroceras maugenesti Acanthopleuroceras pseudonatrix Acanthopleuroceras subarietiforme Acanthopleuroceras sutherlandbrowni Acanthopleuroceras thomsoni Acanthopleuroceras valdani Acanthopleuroceras whiteavesi
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of Austria (4 collections), Canada (46: British Columbia, Yukon), France (70), Slovakia (1), Spain (3), Tunisia (1), Turkey (1), the United Kingdom (6), United States (5: Nevada)
Total: 137 collections including 164 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.