Plesiosauridae
| Plesiosaurids Temporal range:  Early Jurassic - Late Cretaceous? | |
|---|---|
| Plesiosaurus skeleton | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Reptilia | 
| Superorder: | †Sauropterygia | 
| Order: | †Plesiosauria | 
| Superfamily: | †Plesiosauroidea | 
| Family: | †Plesiosauridae Gray, 1825 | 
| Genera | |
The Plesiosauridae are a monophyletic family of plesiosaurs named by John Edward Gray in 1825.