The thick dome of a pachycephalosaur (MOR 11776) with a small scale model of a fleshed-out version of the dinosaur.

Happy #FossilFriday! Pachycephalosaurs are sometimes referred to as the “dome-headed” dinosaurs. This thick dome belongs to a large pachycephalosaur (MOR 11776) that was discovered in the #Cretaceous #HellCreekFormation of #MakoshikaStatePark.
#Paleontology #Pachycephalosaurus #Fossil #Montana