Home'Teen' Pachycephalosaur Butts Into Fossil Record – Mirage News 'Teen' Pachycephalosaur Butts Into Fossil Record – Mirage NewsAustralia ‘Teen’ Pachycephalosaur Butts Into Fossil Record Mirage News Stunningly Complete Dome-Headed Dinosaur Emerges From The Sands of Mongolia ScienceAlert Teen dinosaur probably practiced “headbutting itself into a relationship” cosmosmagazine.com