Re: Synapsids weren't reptiles? I'm confused.

["T. Michael Keesey" <keesey@gmail.com>]

(The email I'm responding to was accidentally sent to me offlist.)

On Mon, Jun 30, 2008 at 10:15 PM, Garth Godsman <maniraptor@yahoo.com> wrote:
> Been trying to make sense of these exchanges, but as a non-professional
> "nuffy" I'm probably just getting confused.
>
> Synapsids and "reptiles" both evolved from "an" amniote? Or from two
> separate amniotes?

One (or a small group of related amniotes). And since _Amniota_ is a
crown group, that (or those) would have been the first amniote(s), by
definition.

> Just after the appearance or divergence, do we have a sense of what the
> differences between the two would have been?

Probably nothing. The differences would have accumulated after the
population split.

--
T. Michael Keesey
Director of Technology
Exopolis, Inc.
2894 Rowena Avenue Ste. B
Los Angeles, California 90039
http://exopolis.com/
--
http://3lbmonkeybrain.blogspot.com/
http://dragabok.blogspot.com/



-- 
T. Michael Keesey
Director of Technology
Exopolis, Inc.
2894 Rowena Avenue Ste. B
Los Angeles, California 90039
http://exopolis.com/
--
http://3lbmonkeybrain.blogspot.com/
http://dragabok.blogspot.com/