Arizonasaurus

Arizonasaurus; Temporal range: Middle Triassic (Anisian), Possible Carnian record
	Model, Museum am Löwentor, Stuttgart
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Paracrocodylomorpha
Superfamily:	†Poposauroidea
Family:	†Ctenosauriscidae
Genus:	†Arizonasaurus; Welles, 1947
Species
	†A. babbitti Welles, 1947 (type);

Arizonasaurus was a ctenosauriscid archosaur from the Middle Triassic (243 million years ago). Arizonasaurus is found in the Middle Triassic Moenkopi Formation of northern Arizona. A fairly complete skeleton was found in 2002 by Sterling Nesbitt. The taxon has a large sailback formed by elongated neural spines of the vertebrae. The type species, Arizonasaurus babbitti, was named by Samuel Paul Welles in 1947.

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