Cephalopoda - Ceratitida - Hellenitidae
Alternative combinations: Pseudarniotites idahoensis, Pseudharpoceras idahoense, Pseudoharpoceras idahoense
Full reference: J. P. Smith. 1932. Lower Triassic ammonoids of North America. United States Geological Survey Professional Paper 167
Belongs to Hellenites according to J. Jenks et al. 2013
See also Guex et al. 2010, Kummel 1969, Smith 1932 and Spath 1951
Sister taxa: Hellenites (Pallasites), Hellenites compressus, Hellenites elegans, Hellenites inopinatus, Hellenites praematurus, Hellenites radiatus, Hellenites subpraematurus, Hellenites tchernyschewiensis
Ecology: nektonic carnivore
Average measurements (in mm): shell diameter 38.5
Distribution:
• Triassic of United States (2: Idaho collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.