Cephalopoda - Ammonitida - Acanthoceratidae
Alternative combinations: Ammonites navicularis, Calycoceras (Calycoceras) navicularis, Calycoceras naviculare, Calycoceras navicularis
Synonyms: Acanthoceras borgesi Douville 1931, Calycoceras (Metacalycoceras) auspicium Anderson 1958, Calycoceras (Metacalycoceras) stoliczkai Collignon 1937, Calycoceras obrieni Young 1957, Calycoceras stoliczkai Collignon 1937, Mantelliceras oregonense Anderson 1958, Metacalycoceras grossouvrei Spath 1926
Belongs to Calycoceras (Calycoceras) according to M. L. Guendouz et al. 2022
See also Abdel-Gawad 2008, Anderson 1958, Barroso-Barcenilla 2004, Cobban 1972, Cooper 1978, Howarth 1985, Hyatt 1900, Kennedy et al. 1996, Kennedy and Simmons 1991, Matsumoto 1959, Wilmsen and Nagm 2013 and Wilmsen and Nagm 2014
Sister taxa: Calycoceras (Calycoceras) boreale, Calycoceras (Calycoceras) dromense, Calycoceras (Calycoceras) inflatum
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 83.7
Distribution:
• Cretaceous of Algeria (1 collection), Angola (2), France (5), Germany (2), India (1), Japan (2), Libya (2), Spain (1), the United Kingdom (2), United States (29: Arizona, California, Colorado, Kansas, New Mexico, Oregon, Utah)
Total: 47 collections including 48 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.