Cephalopoda - Ammonitida

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

Sister taxa: Diplesioceras, Graphoceratidae, Hildoceratidae, Phymatoceratidae, Sonniniidae

Subtaxa: Erycitinae, Hammatoceratinae, Podagrosiceratinae, Zurcheriinae

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Ecology: fast-moving nektonic carnivore