[Taxacom] London - Systematics Association Lecture and AGM, 9thDec

Dr. David Campbell amblema at bama.ua.edu
Mon Dec 7 15:39:11 CST 2009


Quoting Richard Zander <Richard.Zander at mobot.org>:

> My reading supports the idea that there is evidence for both
> gradualism
> and punctuated equilibrium in the fossil record. 

Yes.  Punctuated patterns occur if stabilizing selection is strong most 
of the time.  

-- 
Dr. David Campbell
425 Scientific Collections Building
Department of Biological Sciences
Biodiversity and Systematics
University of Alabama, Box 870345
Tuscaloosa AL 35487-0345  USA





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