An unsuspecting family of Pachycephalosaurus is

An unsuspecting family of Pachycephalosaurus is being stalked by a T-Rex dinosaur. Better understanding of morph stages for certain dinosaurs has shown that what used to be Dracorex is actually a juvenile Pachycephalosaurus. Four growth stages have been identified and they illustrate the change in head bone from a young juvenile, juvenile, sub-adult to adult. The frills and horns or many ceratopsians undergo these transformations as well

Alertness Apex Dracorex Fern Flooring Foraging Grazing Horned Lookout Lush Omnivore Ornithischia Overgrown Pachycephalosaurid Pachycephalosaurus Paleoart Paleobiology Primordial Prowling Stalking Stygimoloch Suspicion Threat Tyrannosaurus Ugliness Vegetation Woodlands Wyomingensis

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