†family Megacrioceratidae Vermeulen 2006 (ammonite)

Cephalopoda - Ammonoidea - Megacrioceratidae

Parent taxon: Ptychoceratoidea according to J. Klein et al. 2007

Sister taxa: Hamulinidae, Macroscaphitidae

Subtaxa: Megacrioceras Shasticrioceras

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Ecology: fast-moving nektonic carnivore

Distribution:

• Cretaceous of Canada (1: British Columbia collection), Chile (1), Japan (1), United States (2: California)

Total: 5 collections each including a single occurrence

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