Cephalopoda - Ammonitida - Olcostephanidae
Full reference: M. B. Aguirre-Urreta and P. F. Rawson. 2001. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: a Hauterivian Olcostephanus fauna. Cretaceous Research 22(6):763-778
Belongs to Olcostephanus (Jeannoticeras) according to M. B. Aguirre-Urreta and P. F. Rawson 2001
Sister taxon: Olcostephanus (Jeannoticeras) jeannoti
Type specimen: CPBA 19247, a shell. Its type locality is Agrio del Medio, Agrio Formation, O. (O.) laticosta subzone, Neuquén Basin, which is in a Hauterivian transition zone/lower shoreface shale/siltstone in the Agrio Formation of Argentina.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 35.3
Distribution:
• Cretaceous of Argentina (4 collections)
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.