A 183-million-year-old fossil with exceptionally well-preserved soft tissues has revealed that some plesiosaurs were covered in both skin and scales, suiting them to a life stalking the seas for prey.

The discovery of a well-preserved fossil is helping researchers learn more about an iconic Jurassic-period species. The plesiosaur, considered a successful marine predatory ancient species, may ...

Scientists made the discovery by studying the fossil of a pregnant plesiosaur. Experts have long been puzzled over whether or not the creatures laid eggs - but that's now been cleared up.

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, ...

Fossils of small plesiosaurs, long-necked marine reptiles from the age of dinosaurs, have been found in a 100-million year old river system that is now Morocco's Sahara Desert. This discovery ...