The Mosasaurus did not look like a shark, however, but this enormous marine reptile from the Late Cretaceous which measured 17 meters in length has one thing in common with sharks: biting for food was vital for him, so he had "spare" teeth. waiting in his jaw. This magnificent specimen from the Khouribga phosphate mines in Morocco was perfectly prepared to see this detail of this 70 million year old giant of the seas.