An artist’s interpretation of a Jurassic plesiosaur. Fossils from a plesiosaur discovered in West Texas are the only fossils from a Jurassic vertebrate found and described in the state.

A small team of archaeologists, geologists, paleontologists and climate scientists has found that at least one type of plesiosaur had scales on its flippers similar to modern sea turtle species.

Millions of years ago, a long-necked marine predator with flippers dominated the seas. Plesiosaurs were marine reptiles that lived alongside dinosaurs and went extinct at the same time as them.

Fossilized soft tissue is exceptionally rare in plesiosaur fossils. The discovery of a well-preserved fossil is helping researchers learn more about an iconic Jurassic-period species. The ...

The discovery of preserved skin on a 183-million-year-old plesiosaur is revolutionizing our understanding of these extinct marine reptiles. By analyzing the soft tissues of this fossil, researchers ...

A “pellet” found in a plesiosaur fossil unearthed in Kagoshima Prefecture indicates the prehistoric creature regurgitated indigestible parts of its prey, much like modern birds and alligators ...

Researchers at Lund University in Sweden have examined fossilized soft tissue from a plesiosaur for the first time, revealing that the ancient marine reptile had both smooth and scaly skin. The study, ...

It was found near the site where a plesiosaur fossil was unearthed in 2004, the board of education announced on Aug. 26. A research team said the two fossilized species are some of the oldest in ...