Cephalopoda - Ammonitida

Alternative spelling: Hoplitaceaea

Parent taxon: Ammonitina according to C. W. Wright et al. 1996

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

Subtaxa: Forbesiceridae, Hoplitidae, Placenticeratidae, Schloenbachiidae

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Ecology: fast-moving nektonic carnivore