Alaskacephale (Greek for "Alaskan head"); pronounced ah-LASS-kah-SEFF-ah-lee
Woodlands of western U.S.
Late Cretaceous (80-70 million years ago)
Size and Weight:
About eight feet long and 500 pounds
Moderate size; thick skull
One of the newer pachycephalosaurs (bone-headed dinosaurs) on the block, Alaskacephale was named in 2006 after the state of the U.S. where its incomplete skeleton was found. Originally thought be a species (or perhaps a juvenile) of Pachycephalosaurus, it was later "diagnosed" as belonging to its own genus based on slight variations in its skeletal structure. Like other pachycephalosaurs, Alaskacephale was equipped with an unusually thick skull, with which (presumably) males butted one another for the right to mate with females.