Plesioelasmosaurus
| Plesioelasmosaurus Temporal range: Late Cretaceous,  | |
|---|---|
| Some elements of the Plesioelasmosaurus holotype | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Reptilia | 
| Superorder: | †Sauropterygia | 
| Order: | †Plesiosauria | 
| Family: | †Elasmosauridae | 
| Genus: | †Plesioelasmosaurus Schumacher & Everhart, 2022 | 
| Species: | †P. walkeri | 
| Binomial name | |
| †Plesioelasmosaurus walkeri Schumacher & Everhart, 2022 | |
Plesioelasmosaurus is an extinct genus of elasmosaurid plesiosaur from the Late Cretaceous (middle Cenomanian) Greenhorn Limestone of Kansas, United States. The genus contains a single species, P. walkeri, known from a partial skeleton.