Re: Tyrant taxonomy (was RE: Big Bakker article in June Discovery Mag)

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

George Olshevsky (dinogeorge@aol.com) wrote:

<Unfortunately, there is not yet even any agreement on the particular 
calibration of genericometers that separates lumpers from splitters.>

  What prevents thje robusticity of the postorbital, the nearly absent
lachrymal horn, and the robusticity of the facial skull and broader teeth
to imply a closer relationship to *Tyrannosaurus* than to *Albertosaurus*,
and contradict the lachrymal horn (which can invariably be added as a
feature, albeit small, in *Alioramus*) to suggest that it is, in fact,
plesiomorphic for the advanced tyrannosaurines?

  Cheers,


=====
Jaime A. Headden

  Little steps are often the hardest to take.  We are too used to making leaps 
in the face of adversity, that a simple skip is so hard to do.  We should all 
learn to walk soft, walk small, see the world around us rather than zoom by it.

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

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