Arizonasaurus

Arizonasaurus
Temporal range: Middle Triassic (Anisian), Possible Carnian record
Reconstruction of Arizonasaurus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Pseudosuchia
Clade: Paracrocodylomorpha
Clade: †Poposauroidea
Family: †Ctenosauriscidae
Genus: †Arizonasaurus
Welles, 1947
Species
  • †A. babbitti Welles, 1947 (type)

Arizonasaurus (meaning "Arizona reptile") is a genus of ctenosauriscid archosaur from the Middle Triassic (243 million years ago) Moenkopi Formation of what is now Arizona. It is known for having a large back sail formed by elongated neural spines of its vertebrae. The type and only known species is A. babbitti, named and described in 1947.

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