Cephalopoda - Ammonitida - Hildoceratidae
Synonyms: Harpoceras (Nagaoceras) Matsumoto 1947, Nagaoceras Matsumoto 1947, Platyharpites Buckman 1927
Parent taxon: Protogrammoceratinae according to M. K. Howarth 2013
See also Géczy and Meister 1998, Hillebrandt 2006, Sepkoski 2002 and Smith and Tipper 1996
Sister taxa: Fuciniceras, Protogrammoceras
Subtaxa: Lioceratoides (Lioceratoides) Lioceratoides serotinus
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of Algeria (2 collections), Austria (1), Canada (29: British Columbia, Yukon), Chile (1), France (1), Hungary (5), Japan (9), Morocco (6), Spain (34), Tunisia (10), United States (13: Alaska, Nevada)
Total: 111 collections including 146 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.