Olcostephanus (Viluceras) duraznoensis Aguirre-Urreta and Rawson 1999 (ammonite)

Cephalopoda - Ammonitida - Olcostephanidae

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

Belongs to Olcostephanus (Viluceras) according to M. B. Aguirre-Urreta and P. F. Rawson 1999

Sister taxa: Olcostephanus (Viluceras) araucanus, Olcostephanus (Viluceras) permolestus

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

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Specimen images are retrieved through the ePANDDA API.

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