Cephalopoda - Oncocerida - Oncoceratidae
Alternative spelling: Cyrtorhizoceras
Full reference: A. Hyatt. 1900. Cephalopoda. Textbook of Palaeontology 1:502-604
Parent taxon: Oncoceratidae according to C. Teichert et al. 1964
See also Hyatt 1900, Kröger 2013 and Sepkoski 2002
Sister taxa: Asaphiceras, Beloitoceras, Centrorizoceras, Dalecarlioceras, Digenuoceras, Dunleithoceras, Ehlersoceras, Ekwanoceras, Kentlandoceras, Laphamoceras, Loganoceras, Maelonoceras, Metarizoceras, Miamoceras, Neumatoceras, Oncoceras, Oocerina, Orthorizoceras, Paramiamoceras, Plesiorizosceras, Retizitteloceras, Richardsonoceras, Richardsonoceroides, Rizoceras, Romingoceras, Scofieldoceras, Tshingizoceras, Vaupelia, Zittelloceras
Subtaxa: Cyrtorizoceras borni Cyrtorizoceras minneapolis Cyrtorizoceras rusti Cyrtorizoceras tenue Cyrtorizoceras thorslundi
Type: Cyrtoceras minneapolis
Ecology: fast-moving nektobenthic carnivore
Distribution:
• Carboniferous of United States (1: Oklahoma collection)
• Silurian of Canada (1: Manitoba), Ireland (1), United States (4: Wisconsin)
• Ordovician of Canada (2: Nunavut, Quebec), China (1), Norway (1), Sweden (2), the United Kingdom (1), United States (9: Illinois, Iowa, Wisconsin, New York)
Total: 23 collections including 27 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.