†Annuloceras Murphy et al. 1995 (ammonite)
Cephalopoda - Ammonoidea - Aegocrioceratidae
Parent taxon: Aegocrioceratidae according to J. Klein et al. 2007
Sister taxa: Aegocrioceras, Bejucoceras, Hemicrioceras, Parancyloceras, Peltocrioceras, Simancyloceras
Subtaxa: Annuloceras summersi
Type: Annuloceras summersi
Ecology: fast-moving nektonic carnivore