The top of a Pachycephalosaurus skull could be 9 inches (23 centimeters) thick, and much of the skull and the snout were also covered by small bony knobs and spikes. The dinosaur's distinctive ...
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Meet the 16 Strangest Dinosaurs You’ve Never Heard OfIts skull, adorned with bony knobs and spikes ... while others believe it was more for display. Despite Pachycephalosaurus’ ...
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