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Re: [dinosaur] Paleocene tyrannosaurs in Montana



What we have is essentially hearsay. We don't have the measured stratigraphic sections to demonstrate it was in the Fort Union. (And I can tell you from directÂexperience, the Hell Creek and the Fort Union are not always distinct from each other! There is a reason there was a serious debate in the technical literature in the early 20th Century where the Lancian dinosaurs were in the Maastrichtian or the Danian.)

It is "said to be" 1.3 m over the boundary; it is "said to have" almost no wear; but we need independent confirmation of the facts.

(Additionally, a buried tooth or bone can be weathered out of a bank and buried right there: it need not be transported far.)

On Sun, Oct 25, 2020 at 10:14 AM Poekilopleuron <dinosaurtom2015@seznam.cz> wrote:
Good day to all listmembers!

I would like to ask, what is your opinion on this controversial topic: Given that RigbyÂs 1980Âs research about supposedly early Paleocene T. rex teeth in Montana was rejected (and the fossils in question are now considered to be reworked), how was it explained, that they have very little surficial damage of the enamel? If it was really carried by the river stream, then it would bear a visible signs of mechanical damage from impacting stones in the riverbed, right? Yet these fossil teeth, found 1.3 meters above the K-Pg boundary, are said to be almost intact on its surface. Thank you for your thoughts, in advance! Tom


--

Thomas R. Holtz, Jr.
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