[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Perching, climbing, roosting was Re: 11th specimen of Archaeopteryx
On Thu, Nov 10, 2011 at 11:12 PM, Anthony Docimo <firstname.lastname@example.org> wrote:
> We *know* a transition occurred - we have birds these days, after all. It
> *is* possible. *Nobody* said it was easy.
> But some people are saying its impossible.
It's perfectly legitimate to question *when* the transition occurred.
It clearly happened by the ancestor of Ornithothoraces, but it doesn't
appear to stretch back to the ancestor of Eumaniraptora.
T. Michael Keesey