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  Topic: Evolution of the horse; a problem for Darwinism?, For Daniel Smith to present his argument< Next Oldest | Next Newest >  
Wesley R. Elsberry



Posts: 4386
Joined: May 2002

(Permalink) Posted: Sep. 22 2007,04:38   

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What then, is your position on the lack of evidence in the fossil record for gradualism?


What meaning of "gradualism" are you interested in? Might it be the "phyletic gradualism" described by Eldredge and Gould in 1972?

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    In this Darwinian perspective, paleontology formulated its picture for the origin of new taxa. This picture, though rarely articulated, is familiar to all of us. We refer to it here as “phyletic gradualism” and identify the following as its tenets:

   (1) New species arise by the transformation of an ancestral population into its modified descendants.

   (2) The transformation is even and slow.

   (3) The transformation involves large numbers, usually the entire ancestral population.

   (4) The transformation occurs over all or a large part of the ancestral species’ geographic range.


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"You can't teach an old dogma new tricks." - Dorothy Parker

    
  1733 replies since Sep. 18 2007,15:27 < Next Oldest | Next Newest >  

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