A vertebra of the Pliosaur Liopleurodon. This specimen is of Kimmeridgian age, approximately 152 to 157 Mya in the Jurassic period and was collected in Weymouth, Dorset, UK. Liopleurodon had a large head, a short neck and tail, and long, paddle-shaped limbs. The vertebral centra of the neck are compressed front to back, and are flat faced, with facets that act as rib articulations. the teeth which rise from sockets are long and bow - shape, with some longitudinal ribbing. Large animals had heads measuring some 3 m in length and held 30 cm long teeth. Pliosaurs ate fish and cephalopods such as belemnites which abounded during the Late Jurassic. This vertebra is 12 x 13 cm in size and is supplied with an information label.