Here are the top 10 largest marine dinosaurs:
1. Mosasaurus - over 18 meters long, a marine predator that lived in the late Cretaceous period.
2. Liopleurodon - up to 23 meters long, lived in the European waters during the Jurassic period.
3. Kraken - up to 26 meters long, lived in the North American waters during the late Cretaceous period.
4. Elasmosaurus - over 14 meters long, lived in the North American waters during the early Cretaceous period.
5. Pliosaurus - up to 15 meters long, lived in the European waters during the Jurassic period.
6. Ichthyosaurus - up to 16 meters long, lived in European waters between the Triassic and Jurassic periods.
7. Ophthalmosaurus - up to 7 meters long, lived in European waters during the Middle Jurassic period.
8. Plesiosaurus - up to 11 meters long, lived in European waters during the Jurassic period.
9. Nyctosaurus - up to 6 meters long, lived in the western United States during the late Cretaceous period.
10. Basilosaurus - up to 18 meters long, lived in North American waters during the Paleocene period.
