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Re: Bones and Stomach acid



How is the freeze-thaw cycle ruled out to diagnose this kind of mis-identification?

 Thanks,

 Joe

On 8/19/2010 6:52 PM, Phillip Bigelow wrote:
When finding teeth lacking enamel, it is important that exfoliation of the 
enamel due to freeze-thaw cycles (created while the bone was laying on the 
surface of the ground), be first ruled out.  Freeze-thaw cycles do an excellent 
job of removing tooth enamel from the dentine of a fossil, and many an 
exfoliated tooth has been mis-identified as a tooth that passed through a 
critter's digestive tract.

<pb>


---------- Original Message ----------
From: Patty Ralrick<pattyralrick@hotmail.com>
To: Dinosaur Mailing List<dinosaur@usc.edu>
Subject: RE: Bones and Stomach acid
Date: Wed, 18 Aug 2010 09:53:17 -0600


Check out this citation for more info. It's a pretty cool paper.

Fisher, D.C. 1981. Crocodilian scatology, microvertebrate concentrations and 
enamel-less teeth. Paleobiology 7(2):262-275.

Sorry if someone else has already posted this. I get the mailing list as a 
digest once a day and am sometimes a bit behind the times. : )

Enjoy!

Patty
***********************************
Patty Ralrick
PhD Student, Biological Sciences
University of Calgary
Calgary, AB, Canada                                     

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