Cephalopoda - Ammonitida - Nostoceratidae
Alternative combination: Helicoceras stevensoni
Belongs to Didymoceras according to P. L. Sealey and S. G. Lucas 2019
See also Cobban 1970, Kennedy and Bilotte 1995, Kennedy and Cobban 1997 and Kennedy et al. 2000
Sister taxa: Didymoceras angulatum, Didymoceras aurarium, Didymoceras awajiense, Didymoceras binodosum, Didymoceras californicum, Didymoceras cheyenense, Didymoceras cheyennense, Didymoceras cochleatus, Didymoceras donezianum, Didymoceras draconis, Didymoceras hidakense, Didymoceras hornbyense, Didymoceras nebrascense, Didymoceras newtoni, Didymoceras nicolletii, Didymoceras platycostatum, Didymoceras subtuberculatum, Didymoceras tenuicostatus, Didymoceras tortus, Didymoceras tricostatus, Didymoceras umbilicatus, Didymoceras uncus, Didymoceras vancouverensis, Didymoceras vespertinus, Didymoceras whiteavesi, Nostoceras (Didymoceras) attenuatum, Nostoceras (Didymoceras) densecostatum, Nostoceras (Didymoceras) obtusum, Nostoceras (Didymoceras) postremum, Nostoceras (Didymoceras) varium, Emperoceras cooperii
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of France (1 collection), United States (11: Colorado, Delaware, Montana, Wyoming)
Total: 12 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.