Genus TRACHYCERAS
Kingdom / Phylum . . . . . . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Mollusca Cephalopoda / Ammonoidea / n.a. n.a. / n.a. / Ceratitida n.a. / n.a. Clydonitoidea / Trachyceratidae n.a. / Trachyceras
Age: Distribution:	Late Early Triassic - Early Late Triassic North America, Europe, Asia
Depicted on: Meter franking, Königswinter, German Federal Republic, 1998.