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Re: Defending grades (Was: Re: Archaeopteryx (rant))

In a message dated 6/21/03 8:51:31 AM Pacific Daylight Time, torf-o@online.no 

<< About chronospecies I certainly agree that all boundaries are artificial. 

They need not be. All we need to do is recognize the appearance of an 
evolutionary novelty (a change in a character's state, or the appearance of a 
character, for example). When one appears, it is valid to assert that a species 
has changed into another.