Jurassic Park helped popularize this head butting dino. Learn why paleontologists are undecided about the evolution and behavior of the Pachycephalosaurus. Even if you don’t recognize that formality, ...

Did dome-headed dinosaurs really butt heads? While not one of the most important subjects in paleontology, the question is one of the most fraught. The thick-skulled dinosaurs look as if they were ...

New end-stage juvenile specimens of Pachycephalosaurus from the Upper Cretaceous Hell Creek Formation, Montana, confirm the earliest expression of squamosal nodes, parietal ornamentation, and jugal ...

A Pachycephalosaurus, photographed at the North Carolina Museum of Natural Sciences. The object tore through the roof and both floors of a two-story home. NASA will investigate whether it’s space junk ...

Pachycephalosaurus is one of the six pets available in the Primal Egg that was added to Grow a Garden as part of the Pet Mutation update. This launched on July 12, 2025. If you're hoping to add the ...

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