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In a message dated 95-12-04 11:24:06 EST, Thomas_R_HOLTZ@umail.umd.edu (th81)

>In fact, there is no evidence to support the presence of a patagium in avian
>evolution, and much to refute it (with regards to wing morphology, shoulder
>morphology, featers, etc.).

Two different brachial patagia in extant birds have been reported by people
on this list in earlier communications. Where did these patagia come from
(they're certainly not very extensive, like pterosaur or bat wing patagia)?