[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: DEFENDING MODERN BIOLOGY



Ken Kinman wrote:

Thecodontia is a paraphyletic group, not a polyphyletic "trash-can".

Now that you mention it, it WAS a polyphyletic trash-can. The Thecodontia became a receptacle for any Triassic reptile that appeared to be an archosaur and did not appear to be a dinosaur, crocodilian or pterosaur. I've seen _Longisquama_, _Sharovipteryx_ (_Podopteryx_) and _Hupehsuchus_ all shoehorned into the Thecodontia. For the most part the Thecodontia was a paraphyletic waste-basket, but its membership became so broad and ill-defined that it occasionally the Thecodontia did become polyphyletic.


Come back Dr Holtz, all is forgiven!!!


Tim ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com