New Canadian "Sea Monster" Discovered

(nationalgeographic) -- The remarkably well-preserved fossil of a dinosaur-era sea creature found in a Canadian mine is turning out to be a gold mine for paleontologists.

The Cretaceous-period reptile, dubbed Nichollsia borealis, is not only a new species—it represents a whole new genus, scientists announced on March 20.

It's also one of the oldest and most complete plesiosaur fossils ever unearthed in North America.

Plesiosaurs were carnivorous reptiles that roamed the seas between about 205 million to 65 million years ago. full story