Stegoceras, skull dome (Pachycephalosaurus) Troodon Seymouria (pronounced see-MORE-ee-ah) is named

Seymouria (pronounced see-MORE-ee-ah) is named after Seymour

This bipedal meat-eater was up to about 26 ft (8 m) long

and Paranthropus boisei

Trilobites are extinct arthropods that form the class Trilobita

Stegoceras, skull dome (Pachycephalosaurus) Troodon Seymouria (pronounced see-MORE-ee-ah) is namedThis specimen is the dome made of very thick bone from the head of Stegoceras. It is removable from its base for study. 4 inches long 3 inches wide 2. 25 inches thick 7x6 inch matrix Pronounced STEG oh CEER us, Stegoceras (meaning "roofed horn") was a bipedal, herbivorous, dome headed, plant eating dinosaur from the late Cretaceous period, about 76 65 million years ago. This pachycephalosuar was about 7 ft (2 m) long and lived in what is now Alberta,