Cephalopoda - Ammonitida - Acanthoceratidae
Parent taxon: Calycoceras according to M. L. Guendouz et al. 2022
See also Barroso-Barcenilla 2004, Cooper 1978, Kennedy 1994, Kennedy et al. 1996, Kennedy et al. 1996, Kennedy and Simmons 1991 and Wright et al. 1996
Sister taxa: Calycoceras (Conlinoceras), Calycoceras (Gentoniceras), Calycoceras (Hourcqiceras), Calycoceras (Newboldiceras), Calycoceras (Proeucalycoceras), Calycoceras bathyomphalum, Calycoceras boulei, Calycoceras choffati, Calycoceras lafouxiense, Calycoceras robustum, Calycoceras spinosum
Subtaxa: Calycoceras (Calycoceras) boreale Calycoceras (Calycoceras) dromense Calycoceras (Calycoceras) inflatum Calycoceras (Calycoceras) naviculare
Type: Ammonites navicularis
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Algeria (1 collection), Angola (2), France (6), Germany (2), India (1), Japan (2), Libya (2), Papua New Guinea (1), Spain (1), the United Kingdom (2), United States (32: Arizona, California, Colorado, Kansas, New Mexico, Oregon, South Dakota, Utah)
Total: 52 collections including 56 occurrences