Re: Amniota to Mammalia in four easy steps

["T. Michael Keesey" <mightyodinn@yahoo.com>]

--- John Conway <john_conway@mac.com> wrote:
> Many thanks to all those who replied to my post, but I don't think I was 
> very clear on exactly what I needed. Below is a link to the cladogram as 
> it stands.
> 
> http://homepage.mac.com/john_conway/amniota.html
> 
> Any comments or suggestions would be most welcome.

The diagram looks great! But you're not going to be able to do it in that style 
without a lot of
omissions. I think it would be best to show the major clades between 
_Synapsida_ and _Mammalia_
(i.e, _Therapsida_ and _Cynodontia_, adding _Eupelycosauria_, _Sphenacodontia_, 
_Thriodontia_,
_Eucynodontia_ and/or _Mammaliformes_ if you wish) and not worry too much about 
including all the
outgroups. (It's not like the sauropsid half has everything -- it's missing 
_Batropetidae_,
_Bolosauridae_, _Captorhinidae_, _Protothyrididae_, _Endennasauridae_, 
_Mesenosauridae_,
_Araeoscelida_, _Choristodera_, _Coelurosauravidae_, _Thalattosauria_, 
_Trilophosaurus_,
_Rhynchosauridae_, _Prolacertiformes_. _Proterosuchidae_, _Erythrosuchidae_, 
_Euparkeria_, and
others. Which isn't to say it's not a good simplified cladogram! Although the 
_Saurischia_ +
_Herrerasauridae_ + _Lagosuchus_ + _Ornithischia_ tetratomy is a bit odd -- 
_Lagosuchus_ is
definitely outside the other three, and if you're going to show 
_Herrerasauridae_ you ought to put
_Eoraptor_ there, too.)

Here's a cladogram of _Synapsida_: http://dinosauricon.com/taxa/synapsida.html

My $0.02 -

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=====> T. Michael Keesey <keesey@bigfoot.com>
=====> The Dinosauricon <http://dinosauricon.com>
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