Paleo Video: A Modern Day Dinosaur Extinction

As a follow up to the previous posting, here's a video by Jennifer Skene about the pachycephalosaurid research done by Jack Horner and Mark Goodwin.

Just for the record, I agree with their assessment of Dracorex being a juvenile Stygimoloch, but I'm not as convinced that both taxa are referable to Pachycephalosaurus.