Re: DEFENDING MODERN BIOLOGY

["T. Mike Keesey" <tmk@dinosauricon.com>]

On Wed, 21 Jun 2000, Ken Kinman wrote:

>       Thecodontia is a paraphyletic group, not a polyphyletic "trash-can".  
> And cladists create paraphyletic groups all the time, but just don't realize 
> it (or admit it), because they apparently believe speciation is actually a 
> sister-sister splitting process, rather than a mother-daughter budding 
> process.

But what's the utility of a group that includes _Pseudolagosuchus_ with
_Drepanosaurus_, but not with _Eoraptor_; that includes _Poposaurus_ with
_Rhynchosaurus_, but not with _Sphenosuchus_; that includes
_Sharovipteryx_ with _Aetosaurus_, but not with _Eudimorphodon_; etc.?

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