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Re: DML Omnipedia stuff



In a message dated 96-02-16 10:57:37 EST, Thomas_R_HOLTZ@umail.umd.edu (th81)
writes:

>Ornithodira is a node within Ornithosuchia joining Dinosauria, Pterosauria,
>and Lagosuchus.  The current phylogeny for this group seems to be:
> (Pterosauria + Schlermochlus ) + (Lagerpeton + ((Lagosuchus + Marasuchus) +
>(Pseudolagosuchus + Dinosauria).
>
>

_Megalancosaurus_ is clearly an ornithodiran, with cervical vertebrae that
differ wildly from the dorsals and a skull that looks rather
pterosaurian--the only skull available for Megalancosauridae. Also in
Megalancosauridae: _Drepanosaurus_, _Dolabrosaurus_, and (provisionally)
_Spinosuchus_. Bunch of derived _arboreal_ archosaurs.