| Rioarribasuchus Temporal range:
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauria |
| Clade: | Pseudosuchia |
| Order: | †Aetosauria |
| Family: | †Stagonolepididae |
| Genus: | †Rioarribasuchus Lucas, Hunt & Spielmann, 2006 |
| Species: | †R. chamaensis
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| Binomial name | |
| †Rioarribasuchus chamaensis (Zeigler, Heckert & Lucas, 2003)
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| Synonyms | |
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Rioarribasuchus is a genus of aetosaur. Fossils have been found from the Chinle Formation in Arizona and New Mexico that date back to the upper Late Carnian stage of the Late Triassic.