Cephalopoda - Goniatitida

Alternative spelling: Pericyclaceae

Parent taxon: Goniatitina according to W. M. Furnish et al. 2009

Sister taxa: Adrianitoidea, Agathiceratoidea, Cycloloboidea, Dimorphoceratoidea, Gastrioceratoidea, Goniatitoidea, Gonioloboceratoidea, Marathonitoidea, Neodimorphoceratoidea, Neoglyphioceratoidea, Neoicoceratoidea, Nomismoceratoidea, Popanoceratoidea, Schistoceratoidea, Shumarditoidea, Somoholitaceae, Thalassoceratoidea

Subtaxa: Furnishoceratidae, Intoceratidae, Kozhimitidae, Maxigoniatitidae, Muensteroceratidae, Pericyclidae, Rotopericyclidae, Sudeticeratidae, Temertassetiidae

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Ecology: fast-moving nektonic carnivore