[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: DEFENDING MODERN BIOLOGY
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
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.?
T. Michael Keesey <firstname.lastname@example.org> | AIM <Ric Blayze> | ICQ <77314901>
My Worlds <http://dinosauricon.com/keesey>
The Dinosauricon <http://dinosauricon.com>