Re: Everything you know about the Iren Dabasu age is wrong...

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

Tim Donovan (uwrk2@yahoo.com) wrote:
 
<The left coiled gastropods Mesolanistes are known rom Maastrrichtian deposits
of North America and China as well as the Nemegt. If they aren't present at
Iren Dabasu, it's unlikely to be of Nemegtian age.>

  This is like arguing that if we find a tyrannosaur in one Maastrichtian
environment, it must be in ALL formations of that age without variance. Where
are the tyrannosaurs from India? Where are my Argentine tyrannosaurs? Some
times, enviroments chage site to site, the formation preserves small species
instead of large, or fragments versus whole skeletons. Where are the
*Mesolanistes* snails from Europe, the type section of the Maastrictian being
marine? In this case, should not *Mosasaurus hoffmanni*, known from NA AND
Europe, not also be in Asia? Arguing evidence from the lack thereof is simply
not LOGICAL.

  Cheers,

Jaime A. Headden

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)

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