Transport-Induced Abrasion on Theropod Teeth

["Jaime A. Headden" <qilongia@yahoo.com>]

David Marjanovic (david.marjanovic@gmx.at)> wrote:

<Teeth are notorious for reworking (there are some in _Miocene_ layers of 
France!), and it has
been demonstrated (IIRC experimentally) that it's impossible to tell little 
transport from no
transport. Eggshell _fragments_ can also be reworked AFAIK.>

  Not to disagree but to clarify, theropod teeth show practically _no_ abrasion 
due to transport
after having been gone through a rock tumbler for 577 hours. That's a lot of 
time for one tooth
[out fo several] to show _some_ abrasion (scratches) on a small area of the 
crown. Otherwise,
teeth were polished as aresult. For explanation, read Argast, Farlow, Gabet, & 
Brinkman, 1987
(Transport-induced abrasion of fossil reptile teeth: Implications for the 
existence of Tertiary
dinosaurs in the Hell Creek Formation, Montana. _Geology_ 15: 927-930).

=====
Jaime A. Headden

  Aaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhr-gen-ti-na
  Where the Wind Comes Sweeping Down the Pampas!!!!

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