Pachycephalosaurus pronounced Pack-ee-seff-ah-low-sore-us
Means: Thick headed lizard
Period: Late cretaceous – 65 million years ago
Where: Montana, North America, South Dakota, Wyoming
Pachycephalosaurus’ name comes from their dense skulls, which were over 10 inches thick!
Their dome shaped head may have been used in battle against rival members of its species or to ram predators.
They measured in at 5 metres long and weighed 500 kilograms.
- Least Concern
- Near Threatened
- Critically Endangered
- Extinct in the Wild