Cephalopoda - Ammonitida - Scaphitidae
Full reference: W. A. Cobban. 1987. The Upper Cretaceous ammonite Rhaeboceras Meek in the western interior of the United States. United States Geological Survey Professional Paper 1477:1-15
Belongs to Rhaeboceras according to J. C. Grier et al. 1992
See also Cobban 1987
Sister taxa: Ammonites opalus, Rhaeboceras albertense, Rhaeboceras burkholderi, Rhaeboceras cedarense, Rhaeboceras halli, Rhaeboceras mullananum, Rhaeboceras subglobosum, Rhaeboceras whiteavesi
Type specimen: USNM 413044, a shell. Its type locality is USGS Mesozoic 16093, Reservoir No. 3, which is in a Campanian marine sandstone in the Pierre Shale Formation of Colorado.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 70.5
Distribution:
• Cretaceous of United States (3: Colorado, Montana collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.