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. The University ...

The discovery of a giant 100 million-year-old marine reptile’s skeleton in Australia has been hailed by researchers as a breakthrough that may provide vital clues about prehistoric life. The remains ...

Plesiosaurs are a group of extinct marine reptiles that lived in the oceans while the dinosaurs lived on land. Find out what plesiosaur fossils have revealed about these animals and how big they could ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Between the later part of the Triassic and ...