Massive dinosaur skull unearthed in Northern Alberta

After 72 million years underground palaeontologists near Grande Prairie in Alberta have unearthed a 600lb (272kg) skull of a Pachyrhinosaurus, a plant-eating dinosaur that roamed Alberta’s badlands.

Also known as "Big Sam," it is the second adult and biggest skull discovered in Pipestone Creek, believed to be one of the most dense bone beds in North America.

Dr Emily Bamforth, a paleontologist from the Philip J. Currie Dinosaur Museum, noted that alongside the adult bones, the site contains hundreds of juvenile remains.

Video by Eloise Alanna