Thalassotitan was a mosasaur, a type of marine reptile related to lizards and snakes. It was not a dinosaur. Thalassotitan lived during the Late Cretaceous, with fossils found in Africa.

All the Thalassotitan illustrations below were collected from the internet. Enjoy and explore:

Thalassotitan was described by the following scientific paper(s):
  • N. Bardet, X. Pereda Suberbiola, and M. Iarochene, F. Bouyahyaoui, B. Bouya, M. Amaghzaz. 2004. Mosasaurus beaugei Arambourg, 1952 (Squamata, Mosasauridae) from the Late Cretaceous phosphates of Morocco. Geobios 37:315-324
  • N. R. Longrich, N.-E. Jalil, and F. Khaldoune, O. K. Yazami, X. Pereda-Suberbiola, N. Bardet. 2022. Thalassotitan atrox, a giant predatory mosasaurid (Squamata) from the upper Maastrichtian phosphates of Morocco. Cretaceous Research 140:105315:1-32
  • N. R. Longrich, X. Pereda Suberbiola, and R. A. Pyron, N.-E. Jalil. 2021. The first duckbill dinosaur (Hadrosauridae: Lambeosaurinae) from Africa and the role of oceanic dispersal in dinosaur biogeography. Cretaceous Research 120:104678