Arizonasaurus
| Arizonasaurus | |
|---|---|
| Reconstruction of Arizonasaurus | |
| 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 | |
| |
Arizonasaurus (meaning "Arizona reptile") was a ctenosauriscid archosaur from the Middle Triassic (243 million years ago) Moenkopi Formation of what is now Arizona. The taxon 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 in 1947.