On Thursday, February 9, 2006, at 01:05 PM, Ken.Carpenter@dmns.org
wrote:
The crest obviously is a resonating chamber like lambeosaurs to call
other scavengers to dinner - ;-)
Seemingly illogical given that that would only mean less food for the
'calling' individual. Vultures & bald eagles, for example, don't summon
each other AND they often squabble and/or fight . HOWEVER, it would
make sense if that when groups were assembled they would cooperate in
defense of themselves & the carcass from the [at that time larger
representatives of] other predaceous theropods of the time. This would
also be a good starting point for the socialization that certain
assemblages of tyrannosaurid fossils represent. Besides the obvious
social implications of a head-borne crest that works directly against
predation. . .