 | This article relies largely or entirely on a single source. (May 2022) |
| Eardasaurus Temporal range: Middle Jurassic,
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| Holotype specimen, displayed at the Oxford University Museum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Pliosauridae |
| Clade: | †Thalassophonea |
| Genus: | †Eardasaurus Ketchum & Benson, 2022 |
| Type species | |
| †Eardasaurus powelli Ketchum & Benson, 2022
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Eardasaurus is a genus of thalassophonean pliosaurid from the middle Jurassic Oxford Clay Formation. The animal would have measured over 4.7 m (15 ft) long (the tail was not fully preserved) and possessed a high amount of teeth relative to other pliosaurs. Its teeth show distinct ridges formed by the tooth enamel, some of which are very pronounced and similar to carinae, giving the teeth a cutting edge.