File:Pachycephalosaurus Head Butting.png
Hypothetical head-to-body interactions among pachycephalosaurids.
Giraffa-style necking and parietal clashing in high-domed and large-horned specimens such as subadult Pachycephalosaurus (“Stygimoloch” and “Dracorex”).
Date
Source
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0068620
Author
Ryan Steiskal
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