From: "Steve Ewing" 

On Thu, 17 Nov 2005 10:31:29 -0500, Bill Lucy  wrote:

> The ability to interbreed and to create viable/fertile offspring then
> becomes just one part of determining a different species. IMO, this
> makes Gary B's definition unworkable.

Well, yeah, I would say it is just a rule of thumb, but not definitive.

--
Steve 
http://www.qmss.com/~sewing

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