Plesiosaurs, who thrived during the early to middle Jurassic Period, used four paddlelike flippers of nearly equal size and musculature to swim. Despite the seemingly subpar engineering, the fossil ...

A research group may have unraveled the mystery behind the locomotion of the ancient marine reptile, the plesiosaur, by recreating a bio-inspired control system that accounts for motion adjustment.

The majestic plesiosaur swam through shallow seas millions of years ago, eating fish like a dinosaur-era Loch Ness monster. A scientific debate over how plesiosaurs swim has been raging since the ...

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 ...