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



> Therefore I think phylogenetic nomenclature  
> _increases_ stability, contra Benton et omnes. 
> (Who seem to think that the 2 eliminate each other -- 
 
The 2 sources of instability, I mean. 
 
> (all basal amniotes except 2 clades) 
 
"Basal" is wrong. 

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