[dinosaur] Paleocene tyrannosaurs in Montana

To: <dinosaur-l@usc.edu>, <tholtz@umd.edu>

Subject: [dinosaur] Paleocene tyrannosaurs in Montana

From: Poekilopleuron <dinosaurtom2015@seznam.cz>

Date: Sun, 25 Oct 2020 15:13:55 +0100 (CET)

Delivered-to: dinosaur-l@mymaillists.usc.edu

Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=seznam.cz; s=beta; t=1603635238; bh=lh3w6QXuNpdSphAcQPtCY02VXWSd0BeSF6hcw+ulCBk=; h=Received:From:To:Subject:Date:Message-Id:Mime-Version:X-Mailer: Content-Type; b=Oic+HHUeZNnd9vqED9werwfK6GxjvPcR9KZOzLAsr0Tj03N3cJPi6g3CRLhkptAra oYCJhN7/vvsAIVQIrr9EAFW7ZVmczdq0AU3DCbSjo1g8lQ+WiDwavj+Qo1lSHOLyVH HG2va76D/atIkfuAmzdBOxNuRxkNVjgj/8XJlq2Y=

List-archive: <http://mymaillists.usc.edu/sympa/arc/dinosaur-l>

List-help: <mailto:sympa@mymaillists.usc.edu?subject=help>

List-id: <dinosaur-l.mymaillists.usc.edu>

List-owner: <mailto:dinosaur-l-request@mymaillists.usc.edu>

List-post: <mailto:dinosaur-l@mymaillists.usc.edu>

List-subscribe: <mailto:sympa@mymaillists.usc.edu?subject=subscribe%20dinosaur-l>

List-unsubscribe: <mailto:sympa@mymaillists.usc.edu?subject=unsubscribe%20dinosaur-l>

Reply-to: Poekilopleuron <dinosaurtom2015@seznam.cz>

Sender: dinosaur-l-request@cal-mailinglists.usc.edu

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