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Re: Pachycephalosaurs could really knock heads...
On Tue, 1 Apr 2008, Jamie Stearns wrote:
If head-butting was used to fight over mates (yes, big "if" but this is one
of the primary functions of intraspecific combat in modern animals) perhaps
pachycephalosaurs mated for life? That would explain why older adults
wouldn't need to fight over a mate while younger ones would.
Older ones would presumably be bigger than the younger ones and thus be
able keep it at the implied threat stage.