ammonites
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†family Megacrioceratidae Vermeulen 2006 (ammonite)

Cephalopoda - Ammonoidea

PaleoDB taxon number: 133081

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