PACHYCEPHALOSAURUS
(PAK-ee-CEF-al-oh-SAW-rus)
Pachycephalosaurus lived
about 70 million years ago. It was a plant-eater of a family of dinosaurs
known as "Boneheads," because of their unusually thick skulls. For that
reason, it got the name Pachycephalosaurus, which means "Thick-headed
Reptile."
Pachycephalosaurus was
one of the largest of the Boneheads at about 15 feet long and up to 450
pounds. So it was about the same weight as a gorilla. It walked on its
back legs, appeared to be slow moving and usually traveled in packs. Its
only defense against rivals and predators was its thick hard skull. It
would ram its victims in an attempt to knock them senseless.
Pachycephalosaurus’
skull was over 10 inches thick. Wouldn’t that be great for hitting a soccer
ball with your head?
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