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> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf
Of
> Jaime A. Headden > > Given either of the two theories regarding pterosaur > evolution, one being the archosaur derivative, and the > other lepidosauriform derived, both have ancestors > that could be and probably were, scansorial or > arboreal. Gee,...I hate to point this out (after Dr Holtz already
corrected that post)...but...I gotta know! I thought the archosaur derived
theory had Lagosuchus (or perhaps Scleromochlus)) as it`s prime candidate. As
Padian proposed it, these forms were considered to be "cursorial", and
that the evolution of pterosaurs was from the "ground-up" as also
proposed (by some) for birds.
Of course, ...there may be others out there who propose some arboreal
archosaur led to pterosaurs,but, if that`s the case, I`m unaware of it, and
would like to know what these alternate theories are, and what are the
refs.
Which brings me to another question. BFV online
only lists refs up to 1993 (I believe). Are there any online sources available
for searching out more up to date refs???
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