The toddler was just 3 years old and 5 feet (1.5 meters) long when it wandered into a river near Alberta, Canada, and drowned about 70 million years ago. The beast was so well-preserved that some of its skin left impressions in the nearby rock.

The fossil is the smallest intact skeleton ever found from a group of horned, plant-eating dinosaurs known as ceratopsids, a group that includes the iconic Triceratops.

Finding intact baby dinosaurs is incredibly rare.

"The big ones just preserve better: They don't get eaten, they don't get destroyed by animals," said study co-author Philip Currie, a paleobiologist at the University of Alberta. "You always hope you're going to find something small and that it will turn out to be a dinosaur."