Genus GRAMMOCERAS
Kingdom / Phylum . . . . . . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Mollusca Cephalopoda / Ammonoidea / n.a. n.a. / n.a. / Ammonitida n.a. / n.a. Hildoceratoidea / Hildoceratidae Grammoceratinae / Grammoceras
Age: Distribution:	Late Early Jurassic North America, Europe, Asia
Depicted on: Niger, 2021 (position 1 of sheet, fossil, probably) Cancel, Thouars, France, 1989-2002, with and without frame, G. thouarense.