Cephalopoda - Ammonitida - Acanthoceratidae

Full reference: W. A. Cobban. 1987. Some Middle Cenomanian (Upper Cretaceous) acanthoceratid ammonites from the Western Interior of the United States. United States Geological Survey Professional Paper 1445:1-28

Belongs to Protacanthoceras according to W. A. Cobban 1987

See also Kennedy and Cobban 1990 and Wright et al. 1996

Sister taxa: Protacanthoceras bunburianus, Protacanthoceras fisherense, Protacanthoceras hosei, Protacanthoceras involutum, Protacanthoceras proteus, Protacanthoceras tuberculatum

Type specimen: USNM 388189

Ecology: fast-moving nektonic carnivore

Distribution: found only at USGS Mesozoic D5900, Elm Creek (Cretaceous of Wyoming)

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Specimen images are retrieved through the ePANDDA API.