Genus STYXOSAURUS

Kingdom / Phylum . . . . . . . .
Subphylum / Superclass . . . .
Class / Subclass / Infraclass
Division / Superorder / Order
Suborder / Infraorder . . . . . .
Superfamily / Family . . . . . . .
Subfamily / Genus . . . . . . . . .
Animalia / Chordata
Cephalochordata / Gnathostomata
Reptilia / Diapsida / Lepidosauromorpha
n.a. / Sauropterygia / Plesiosauria
n.a. / n.a.
Plesiosauroidea / Elasmosauridae
n.a. / Styxosaurus
Age:
Distribution:
Late Cretaceous
North America

Depicted on:

Togo, 2015 (sheet margin)
 
tve16