Plesiosaurus, tooth, marine reptile Pteranodon Ornithomimids were long-legged

Ornithomimids were long-legged

a swimming bladder which is open to the pharynx that can function as a lung

they had small slender heads on long necks (which made up about 40% of the length of the body in front of the hips)

This is one of the most complete specimens of Campylognathoides liasicus from the Jurassic of Holzmaden

they are sometimes pressure flaked along the outer edges

Plesiosaurus, tooth, marine reptile Pteranodon Ornithomimids were long-leggedPlesiosaurs (meaning "near lizard") were flippered marine reptiles from the Mesozoic Era they were not dinosaurs. Plesiosaurs are divided into two groups: the Plesiosauroids with long, snake like necks, tiny heads, and wide bodies, and the Pliosauroids, which had large heads with very strong jaws and short necks. The first plesiosaur skeletons were found in England by Mary Anning, in the early 1800s, and were amongst the first fossil vertebrates to be