noun
- large extinct marine reptiles that lived during the Cretaceous period, characterized by paddle-like limbs and powerful jaws
Usage: paleontology
Examples
- Mosasaurs were apex predators in ancient seas.
- The museum’s fossil collection includes several mosasaur specimens.
- Scientists believe mosasaurs could grow up to 50 feet long.
- Mosasaurs went extinct along with the dinosaurs 66 million years ago.
- The discovery of mosasaur fossils helped paleontologists understand marine ecosystems of the Cretaceous.
- Mosasaurs had flippers instead of legs, making them well-adapted for ocean life.