1. Scientists have finally unearthed the heaviest known elasmosaur, an ancient aquatic reptile that swam the seas of the Cretaceous period just 30,000 years before the mass extinction event that wiped out the non-avian dinosaurs about 66 million years ago.
2. The animal would have weighed as much as 15 tons, and it is now one of the most complete ancient reptile fossils ever discovered in Antarctica.
3. This genus, found in the Southern Hemisphere, is characterized by shorter necks and larger skulls.
4. They estimate that the as-yet-unnamed elasmosaur weighed between 11.8 tons and 14.8 tons, with a head-to-tail length of nearly 40 feet.
5. It would likely feed on crustaceans and small fish, based on the small size of its teeth.