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 R. W. 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, Astieria bangei, Astieria raricostata, Astieria zacatecana, Astieria neohispanica, Holcostephanus (Astieria) josephinus, Taraisites bosei, Maderia coahuilensis, Maderia marcosensis, Maderia marcoensis, Subastieria sulcosus, Subastieria balkanica, Subastieria sulcosae, Subastieria inordinata
Type specimen: UMMP 18060, a shell
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 27.3
Distribution: found only at 58-Coahuila (Cretaceous of Mexico)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.