Cephalopoda - Ammonitida - Pachyceratidae
Alternative combination: Ammonites ajax
Full reference: A. d'Orbigny. 1850. Prodrome du paléontologie stratigraphique universelle des animaux mollusques et rayonnés faisant suite au cours élémentaire de paléontologie et de géologie stratigraphique 1:1-392
Belongs to Erymnoceras according to A. Jeannet 1951
Sister taxa: Erymnoceras (Pachyerymnoceras), Erymnoceras baylei, Erymnoceras coronoides, Erymnoceras doliforme, Erymnoceras nodosum, Erymnoceras philbyi, Erymnoceras triplicatum
Type specimen: MNHN F A05872
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 32.4
Distribution:
• Jurassic of Saudi Arabia (2 collections), Switzerland (4)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.