Cephalopoda - Ammonitida

Alternative spellings: Acanthoceratacea, Acanthoceratoidea

Parent taxon: Ammonitina according to W. J. Kennedy et al. 1998

Sister taxa: Desmoceratidae, Engonoceratoidea, Eoderoceratoidea, Haplocerataceae, Hildoceratoidea, Hoplitaceae, Kossmaticeratidae, Neokanabiceras, Perisphinctaceae, Perisphinctoidea, Psiloceratoidea, Pulchelliaceae, Silesitidae, Simoceratidae, Sphaeroceratoidea, Stephanocerataceae, Usseliceras

Subtaxa: Acanthoceratidae, Brancoceratidae, Coilopoceratidae, Collignoniceratidae, Flickiidae, Forbesiceratidae, Leymeriellidae, Libycoceratidae, Lyelliceratidae, Prolyelliceratidae, Pseudotissotiidae, Sphenodiscidae, Vascoceratidae

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Ecology: fast-moving nektonic carnivore