Tylosaurs[1] are a species of acquatic reptiles originated from Earth's prehistoric seas.
History
Tylosaurs lived at the time of the last dinosaurs. After a cataclysm that completely annihilated these creatures, Tylosaurs survived and started to live in the deeps of the ocean.
Usages
Thousands of years ago, Tylosaurs were used by Atlanteans as war beasts and battle riding. Still today atlanteans such as Ocean Master use them.[2]
Instead, humans consider these prehistoric reptiles as extincted and remain only as fossils.