Cephalopoda - Ammonitida - Acanthoceratidae
Full reference: W. A. Cobban. 1953. Cenomanian ammonite fauna from the Mosby Sandstone of central Montana. United States Geological Survey Professional Paper 243-D:45-55
Belongs to Metoicoceras according to F. Barroso-Barcenilla 2004
See also Cobban 1953, Cobban and Kennedy 1991 and Kennedy and Cobban 1990
Sister taxa: Metoicoceras bergquisti, Metoicoceras crassicostae, Metoicoceras geslinianum, Metoicoceras gibbosum, Metoicoceras latoventer, Metoicoceras mosbyense, Metoicoceras praecox, Metoicoceras swallovi
Type specimen: USNM 108321, a shell
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 137.0
Distribution:
• Cretaceous of Spain (1 collection), United States (6: Montana, New Mexico)
Total: 7 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.