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Re: Ancient mountains

Over the last several years, numerous pachycephalosaurus fossil pieces and parts have come out of Hell Creek Formation on my ranch which was definitely not mountainous terrain during the Cretaceous. (It was a sandy broad fairly flat coastal plain laced with numerous rivers.) The mountains were quite distant to the west at the time as nothing larger than sand made it down river over the distance. The relatively fresh (unrounded) condition of these fossils seem to indicate a fairly local origin meaning the original owners lived nearby. This is not to say that pachys did not live in mountainous terrain, but would seem to preclude exclusivity to such. I suspect that elevational climatic differences were minimized during the last days of the Cretaceous. Given the large time intervals involved, any zone with an appropriate environment would have been inhabited by this fairly widespread group.
Frank Bliss
MS Biostratigraphy
Weston, Wyoming

On Aug 24, 2005, at 8:31 AM, W. F. Zimmerman, wfzimmerman.com wrote:

"Solid" evidence? As in solid heads? ;-)

I think the theory is that all animals that butt heads for a living must
reside in mountains. The "bonk" carries better with an echo, you see ...

Rams, goats, pachycephalasaurs ...

-----Original Message-----
From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu] On Behalf Of
Sent: Wednesday, August 24, 2005 10:25 AM
To: dinosaur@usc.edu
Subject: Re: Ancient mountains

Thank you very much! I didn't know that so much work had been done on the
subject. Most paleo books I have seen don't go very far into ancient
which I think is quite a pity. Czerkas's Dinosaurs:A Global View was quite
good at describing ancient environments however, if I recall correctly (I
don't have any of my paleo stuff at hand right now). Is it still considered
to be
reasonably accurate on that topic? And, by the way, weren't
pachycephalosaurs thought to have lived in mountains? Was there any solid
evidence for this

Best regards,

Félix Landry