Pachycephalosaur ("thick headed lizard")

Diet Herbivore
Locomotion Bipedal
Length 500cm
Height 170cm
Weight 450kg
Era Lived 71 - 65 million years ago. ( Maastrichtian )
Pachycephalosaurus was a biped herbivore. It's most notable feature is the 30cm thick skull that housed a walnut sized brain.
Scientists used to believe that pachycephalosaurs engaged in intraspecific headbutting. Newer research shows that pachycephalosaurs could not have used their heads in such a way. It's more likely that if they used their head for ramming at all, they only rammed it into the much softer flanks of each other.
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