Arizonasaurus

Arizonasaurus Temporal range: Middle Triassic (Anisian), 243 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Possible Carnian record
Model, Museum am Löwentor, Stuttgart
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Paracrocodylomorpha
Clade:	†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).^[1] 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.