Genus GYRONCHUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Osteichthyes / Actinopterygii / Neopterygii n.a. / n.a. / Pycnodontiformes n.a. / n.a. n.a. / Pycnodontidae n.a. / Gyronchus
Age: Distribution:	Middle Jurassic - Early Cretaceous North America, Europe
Depicted on: Libya, 1996 (position 2 of sheet, fossil, as Mesodon)