Crytoclidus (Pronoun: KRIP-toe-KLIDE-us) means “hidden collar-bone” was a long-necked plesiosaur. It roughly lived between 165-150 million years ago during the late Jurassic period.
This sea reptile could grow up to 8 meters long and weight around 8 tons. It had a neck that was up to 2 meters in length that did not seem to have much flexibility. It had 100 or so long, pointed, curved interlocking teeth, and a wide skull. They were able to move smoothly through open water with four large flexible, paddle-like flippers. It was believed that they either “flex” through the water in wave-like rolling movements, or swim by moving upwards on two flippers and gliding back down again on the other two.
Their main diet comprises of small fish, squids, and crustaceans like shrimps. Prey was caught with its 100 or so long pointed teeth.
Sound preserved remains have been found around areas of Northern France, Russia, and South America, with a full Cryptoclidus skeletons being recovered from clay quarries around Oxford and Peterborough in England.