†family Coilopoceratidae Hyatt 1903 (ammonite)
PaleoDB taxon number: 95301
Parent taxon: Acanthocerataceae according to C. Meister et al. 1992
Sister taxa: Acanthoceratidae, Brancoceratidae, Cleoniceratidae, Collignoniceratidae, Flickiidae, Forbesiceratidae, Leymeriellidae, Lyelliceratidae, Mojsisovicsiidae, Peroniceratidae, Prolyelliceratidae, Pseudotissotidae, Pseudotissotiidae, Sphenodiscidae, Tissotiidae, Vascoceratidae
Subtaxa: Coilopoceras, Erichsenites, Hoplitoides
Ecology: fast-moving nektonic carnivore