Back Chelosphargis advena French Chelosphargis advena Italian Chelosphargis Dutch Chelosphargis advena Russian
| Chelosphargis Temporal range: Late Cretaceous,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Cryptodira |
| Family: | †Protostegidae |
| Genus: | †Chelosphargis Zangerl, 1953 |
| Type species | |
| †Protostega advena (Hay, 1908)
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Chelosphargis is an extinct genus of sea turtle from Upper Cretaceous of Alabama. Only one species has been described, Chelosphargis advena.[1]
- ^ Zangerl, R., 1953, The Vertebrate Fauna of the Selma Formation of Alabama. Part III. The Turtles of the family Protostegidae. Part IV. The Turtles of the family Toxochelydiae. Fieldiana: Geology Memoirs v. 3, n. 3 and 4, p. 57-276.