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, Subastieria sulcosae, Subastieria balkanica, Subastieria sulcosus, Subastieria inordinata, Taraisites bosei, Astieria bangei, Astieria neohispanica, Astieria zacatecana, Astieria raricostata, Maderia casitensis, Maderia coahuilensis

Type specimen: UMMP 21158, a shell

Ecology: fast-moving nektonic carnivore

Distribution: there are no occurrences of Maderia marcosensis in the database

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Specimen images are retrieved through the ePANDDA API.