Ask AI: Is Dracorex just another Pachycephalosaurus specimen or is it a new and valid species?

There's some controversy around this question in the scientific community. When it was first discovered, the Dracorex was believed to be an entirely new species. However, more recent theories proposed by some paleontologists suggest that Dracorex, along with Stygimoloch, could just be younger forms of the Pachycephalosaurus. These paleontologists suspect Dracorex and Stygimoloch don't represent different species, but rather different growth stages of Pachycephalosaurus. This is based on studies of the skull and the recognition that dinosaurs, like birds and some other reptiles, could dramatically change in appearance as they grew. These theories highlight that they share a lot of similar characteristics and could be instances of the same dinosaur at different stages of development. However, not every scientist agrees with this perspective and debate is ongoing. Until more evidence is provided, the exact classification might remain ambiguous.