|Lifespan||33 - 82|
|Medical Dart Resistance||60|
Unlocked by retrieving the fossil from one of the following dig sites:
|Dig Sites||Fossil Quality||Fossil Quantity||Locations||Duration||Cost|
|Hell Creek Formation||1||2||North America | USA | Montana||02:00||$75,000|
|Scollard Formation||2||5||North America | Canada | Alberta||02:00||$75,000|
|Lance Formation||3||3||North America | USA | Wyoming||02:00||$75,000|
|Duration||02:42 - 03:00|
Pachycephalosaurus was a pachycephalosaur (or thick-headed dinosaur) that lived in North America. It was one of the last non-avian dinosaurs before the Cretaceous-paleogene extinction event about 65 million years ago. It is distinctive for the reinforced dome of its skull, leading to speculation that they used to fight each other by head-butting. This has more recently been countered with the suggestion of flank-butting.
Pachycephalosaurus fossils may have been discovered in 1850 in the Lance Formation in south-eastern Montana. Early finds were fragmentary, but more complete specimens have recently been recovered.
Pachycephalosaurus lived on what were floodplains. Its sharp separated teeth would have made it ideal for a mixed-plants diet, and capable of shredding leaves.