ammonites
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†family Polymorphitidae Haug 1887 (ammonite)

Cephalopoda - Ammonitida

PaleoDB taxon number: 194023

Parent taxon: Eoderoceratoidea according to M. K. Howarth 2013

Sister taxa: Amaltheidae, Coeloceratidae, Dactylioceratidae, Eoderoceratidae, Liparoceratidae, Phricodoceratidae

Subtaxa: Polymorphitinae, Tropidoceratinae

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Ecology: fast-moving nektonic carnivore