Polycotylus
Reptiles
Polycotylus is a genus of plesiosaur within the family Polycotylidae. The type species is P. latippinis and was named by American paleontologist Edward Drinker Cope in 1869. Eleven other species have been identified. The name means 'much-cupped... Wikipedia
Scientific name: Polycotylus (Much-cupped vertebrae)
Lived: 155.7 million years ago - 70.6 million years ago (Kimmeridgian - Campanian)
Length: 16 ft.