Cephalopoda - Ammonitida

PaleoDB taxon number: 59786

Invalid subtaxa: Prionocyclidae Breistroffer 1947 [replaced name] (no. 145197), Prionotropidae Zittel 1865 [replaced name] (no. 145196)

Parent taxon: Acanthoceratoidea according to W. J. Kennedy and A. S. Gale 2016

Sister taxa: Acanthoceratidae, Brancoceratidae, Cleoniceratidae, Coilopoceratidae, Flickiidae, Forbesiceratidae, Leymeriellidae, Lyelliceratidae, Mojsisovicsiidae, Peroniceratidae, Prolyelliceratidae, Pseudotissotidae, Pseudotissotiidae, Sphenodiscidae, Tissotiidae, Vascoceratidae

Subtaxa: Barroisiceratinae, Collignoniceratinae, Peroniceratinae, Texanitinae

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Type: Collignoniceras

Ecology: fast-moving nektonic carnivore