[Taxacom] New systematics book
aphodiinaemate at gmail.com
Tue Sep 10 02:02:31 CDT 2013
Curtis Clark wrote:
>One by one, the synapomorphies of
>"birds" fall deeper into the theropods as we learn more.
If we had access to fossils for every species that has ever lived our
classifications would be one large list of species names. And if we had
access to fossils of all populations of every species that has ever lived
we probably wouldn´t have species either.
On 10 September 2013 05:44, Curtis Clark <lists at curtisclark.org> wrote:
> On 2013-09-09 8:09 AM, Fred Schueler wrote:
> > * if reptilia is a grade, "Birds are descended from Reptiles" is just a
> > way of saying "endothermy is an avian apomorphy."
> Aye, there's the rub. The evidence of endothermy in non-avian dinosaurs
> is pervasive if not conclusive. One by one, the synapomorphies of
> "birds" fall deeper into the theropods as we learn more.
> Curtis Clark http://www.csupomona.edu/~jcclark
> Biological Sciences +1 909 869 4140
> Cal Poly Pomona, Pomona CA 91768
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