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Tarrantoceras flexicostatum Cobban 1988 (ammonite)

Cephalopoda - Ammonitida - Acanthoceratidae

PaleoDB taxon number: 338015

Full reference: W. A. Cobban. 1988. Tarrantoceras Stephenson and related ammonoid genera from Cenomanian (Upper Cretaceous) rocks in Texas and the western interior of the United States. United States Geological Survey Professional Paper 1473:1-30

Belongs to Tarrantoceras according to W. A. Cobban 1988

Sister taxa: Tarrantoceras cuspidum, Tarrantoceras exile, Tarrantoceras sellardsi

Type specimen: USNM 400773, a shell. Its type locality is USGS Mesozoic 21850, Greybull, which is in a Cenomanian marine sandstone in the Cody Shale Formation of Wyoming.

Ecology: fast-moving nektonic carnivore