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Re: Stegosaurus species

Tim Williams writes,

>There could be as many as three genera represented from among the Morrison 
>material now called "Stegosaurus".  _S. armatus_ (?including _S. 
>ungulatus_), _S. stenops_, and _S. longispinus_ may each represent a 
>separate genus.  It's been suggested that _S. longispinus_ might be a N. 
>American species of _Kentrosaurus_.  Bakker put _stenops_ in the genus 
>_Diracodon_, but this genus name shouldn't be used.

On the subject of species classification, do we need to have a certain number 
of specimens uncovered until we have a good idea of where to draw the line 
between each species?  What I have noticed is that when dinosaurs were first 
discovered centuries ago, there were dozens of new species described.  Over the 
past half-century, many of these "separate" species have been redefined and 
sunk together under one or two names.


Rob Meyerson

"History repeats itself.  it has to.  No one listens the first time around."
        -Woody Allen