Cephalopoda - Ammonitida - Desmoceratidae
Full reference: R. W. Imlay. 1959. New genera of early Cretaceous (Albian) Ammonites from Alaska. Journal of Paleontology 33(1):179-185
Belongs to Parasilesites according to E. Robert et al. 2018
See also Alabushev 1995, Imlay 1959 and Imlay 1960
Sister taxa: Parasilesites irregularis, Parasilesites kilianiformis, Parasilesites laperousianus
Type specimen: USNM 129872, a shell. Its type locality is Alaska, Kennicott Formation, USGS Mes. loc. 9492, which is in an Albian marginal marine sandstone in Alaska.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 27.0
Distribution:
• Cretaceous of Mexico (1 collection), the Russian Federation (1), United States (3: Alaska)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.