Seeleyosaurus
| Seeleyosaurus Temporal range: Early Jurassic, | |
|---|---|
| Cast of Seeleyosaurus guilelmiimperatoris fossil with reconstructed parts based on the holotype | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Microcleididae |
| Genus: | †Seeleyosaurus White, 1940 |
| Type species | |
| †Seeleyosaurus guilelmiimperatoris (Dames, 1895) | |
| Synonyms | |
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Seeleyosaurus is an extinct genus of plesiosaur from Germany and possibly also Russia.
Two species were known: the type, S. guilelmiimperatoris, and the now obsolete species S. holzmadensis, which has since been absorbed into S. guilelmiimperatoris.