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Re: Tarbosaurus?



In a message dated 7/21/00 10:46:03 PM EST, jeffmartz@earthlink.net writes:

<< Sure, just as soon as YOU provide evidence that the preservational
 biases againt juvenile tyrannosaurs were precisely identical in two
 different depositional environments on two different continents which
 already show evidence of other differences in preservation involving
 tyrannosaurs.  Can you, George? >>

"Precisely identical" is of course absurd. But since this is the null 
hypothesis, I >don't have< to justify it. Rivers are rivers, sedimentation is 
sedimentation no matter the continent or the geological period. Whatever 
biases were operating on one continent were most likely operating on the 
other, particularly since the animals were so similar in size, anatomy, and 
presumed behavior. Unless you have evidence to the contrary, of course, which 
is what I asked for.