Cephalopoda - Ammonoidea

Parent taxon: Turrilitaceae according to W. J. Kennedy et al. 1997

Sister taxa: Anisoceratidae, Baculitidae, Hamitidae, Nostoceratidae, Turrilitidae

Subtaxa: Diplomoceratinae, Neocrioceras, Neoglyptoxoceras, Polyptychoceratinae

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Ecology: fast-moving nektonic carnivore