Cephalopoda - Ammonitida - Polyptychitidae

Alternative spelling: Craspeditidae

Parent taxon: Polyptychitidae according to C. W. Wright et al. 1996

Sister taxa: Polyptychitinae, Simbirskitinae, Tolliinae

Subtaxa: Hectoroceras, Subcraspedites

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Ecology: fast-moving nektonic carnivore