Pachycephalosaurus, skull dome T-Rex It would have been 16

It would have been 16 feet tall

or the Arthrodires

Pterodactylus kochi is a small Pterosaur with a wingspan of only about 18 inches

5---oviraptor egg nest

and either simple or forking at outer end

Pachycephalosaurus, skull dome T-Rex It would have been 16Pachycephalosaurus, meaning "thick headed lizard," is a genus of pachycephalosaurid dinosaurs. The type species, P. wyomingensis, is the only known species. It lived during the Late Cretaceous Period (Maastrichtian stage) of what is now North America. Remains have been excavated in Montana, South Dakota, and Wyoming. It was an herbivorous creature which is primarily known from a single skull and a few extremely thick skull roofs, though more complete