Cephalopoda - Ammonitida - Olcostephanidae
Full reference: R. W. Imlay. 1940. Neocomian Faunas of Northern Mexico. Geological Society America Bulletin 51(1):117-190
Belongs to Maderia according to Imlay 1940
Sister taxa: Olcostephanus (Jeannoticeras), Olcostephanus (Olcostephanus), Olcostephanus (Viluceras), Olcostephanus astierianus, Olcostephanus atherstoni, Olcostephanus delicatecostatus, Olcostephanus detonii, Olcostephanus paucicostatus, Olcostephanus pecki, Olcostephanus popenoei, Olcostephanus sanlazarensis, Maderia marcosensis, Maderia coahuilensis, Maderia casitensis, Holcostephanus (Astieria) josephinus, Astieria zacatecana, Astieria raricostata, Astieria neohispanica, Astieria bangei, Taraisites bosei, Subastieria sulcosae, Subastieria balkanica, Subastieria inordinata, Subastieria sulcosus
Type specimen: UMMP 21158, a shell
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 20.8
Distribution: found only at 18-Coahuila (Cretaceous of Mexico)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.