plesiosaur
/ˈpliːziəˌsɔr/
noun
- A large extinct marine reptile from the Mesozoic Era, with a long neck, small head, four flippers, and a short tail.
- The museum's fossil collection includes a complete skeleton of a plesiosaur.
- Children love learning about the plesiosaur, often imagining it as a sea monster.
- Scientists discovered a new species of plesiosaur in the Arctic last year.