Cephalopoda - Ammonitida - Polymorphitidae

Alternative combination: Ammonites aegion

Full reference: A. d'Orbigny. 1844. Paléontologie Française - Description zoologique et géologique de tous les animaux mollusques et rayonnés fossiles de France - Terrains jurassiques. [Céphalopodes]. 1(Lvr 17-27):193-312

Belongs to Acanthopleuroceras actaeon according to R. Enay et al. 1994

See also d'Orbigny 1844

Sister taxa: none

Type specimen: MNHN.F.R01396. Its type locality is Les Cottards, nr Saint George de Poisieux, which is in a Pliensbachian marine horizon in France.

Ecology: fast-moving nektonic carnivore

Distribution: found only at Les Cottards, nr Saint George de Poisieux

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