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Re: Origin of Birds-arboreal biped

At 11:23 AM 12/8/97 -0000, G & J Bloomfield wrote:
>     The upper Triassic archosaur Scleromochlus taylori had been 
>suggested as one such beast by Von Huene  in 1914.*  He apparently 
>was exploring the possibility of it being a pterosaur ancestor, but 
>it seems to me that it would "work better" as a bird/dinosaur type as 
>is being discussed.

According to the article in Padian's Encyclopedia, it shares some fairly
clear synapomorphies with pterosaurs.

One new (to me) fact I found in there: it is *minute*, about sparrow sized,
if I remember aright.  So, despite it being "cursorial" in anatomy, I do
not see how we can rule out arboreality in it.  At that size an arboreal
lifestyle need not leave essentially any major skeletal traces.

May the peace of God be with you.         sarima@ix.netcom.com