Full reference: M. B. Aguirre-Urreta and P. F. Rawson. 1999. Lower Cretaceous ammonites from the Neuquen Basin, Argentina: Viluceras, a new Valanginian subgenus of Olcostephanus. Cretaceous Research 20:343-357
Type specimen: CPBA 19149, a shell. Its type locality is El Durazno (loose specimens), which is in a Valanginian marine shale/packstone in the Agrio Formation of Argentina.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 70.0
• Cretaceous of Argentina (5 collections)
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.