Plesiosauria
| Use attributes for filter ! | |
| Class | Reptilia |
|---|---|
| Order | †Plesiosauria; Blainville, 1835 |
| Lived | Rhaetian |
| Scientific name | Plesiosauria |
| Clade | †Pistosauria |
| Length | Woolungasaurus glendowerensis |
| Hydrotherosaurus alexandrae | |
| Date of Reg. | |
| Date of Upd. | |
| ID | 1291825 |
About Plesiosauria
The Plesiosauria or plesiosaurs are an order or clade of extinct Mesozoic marine reptiles, belonging to the Sauropterygia. Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetian stage, about 203 million years ago.
Plesiosauria Photos
