Scientists were able to recover most of the jaw and confirm it came from an ichthyosaur that was still growing when it died. This creature lived just before a huge extinction wiped out its kind.
Evidence from other ichthyosaurs suggests it may have been warm-blooded and its ability to give birth to live young made it a real ocean powerhouse, long before whales and other marine mammals evolved!
For young fossil fans, it's proof you never know what you might discover on your next beach walk.