Temporal range: Capitanian, 260 Ma 
Deltavjatia was a procolophonid reptile from the Tatarian stage of the Permian time period. It had a large body of about 1.5 m (5 ft) in length. Deltavjatia was an herbivore. Deltavjatia lived in what is now Russia. The first specimen of Deltavjatia was a specimen of a skull and lower mandobile (PIN 2212/1), found in the Urpalov Formation in Kotelnich, Vyatka River.
Deltavjatia was named a subtaxon of Pareiasauridae by M.S.Y. Lee in 1997. It was named Deltavjatia vjatkensis by Hartmann & Weinberg in 1937. Pareiasuchus vjatkensis is the alternative combination of Deltavjatia vjatkensis. Deltavjatia vjatkensis was also named Anthodon rossicus by Hartmann & Weinberg in 1937.
- "Feeding damage on upper Permian plants from the Sukhona River - Springer". Paleontological Journal. 41: 207–211. 2005-02-11. doi:10.1134/S0031030107020116. Retrieved 2013-10-08.
- "Palaeos Vertebrates Anapsida: Pareiasauridae (2)". Palaeos.com. Retrieved 2013-10-08.
- "Paleobiology Database: Pareiasuchus vjatkensis". Paleodb.org. Retrieved 2013-10-08.
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