Cephalopoda - Ammonitida - Pachydiscidae
Full reference: D. L. Jones. 1963. Upper Cretaceous (Campanian and Maestrichtian) ammonites from southern Alaska. United States Geological Survey Professional Paper 432:1-53
Belongs to Pachydiscus (Neodesmoceras) according to D. L. Jones 1963
Sister taxa: Neodesmoceras catarinae, Pachydiscus (Neodesmoceras) mokotibensis, Pachydiscus (Neodesmoceras) princeps, Pachydiscus (Neodesmoceras) soma
Type specimen: USNM 131200, a shell. Its type locality is USGS M565, Talkeetna Mountains, which is in a Campanian marine siliciclastic in the Matanuska Formation of Alaska.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 147.8
Distribution:
• Cretaceous of United States (7: Alaska collections)
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.