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Re: Mesozoic gliding mammal

jrc writes:

----- Original Message -----

As I read the paper, the current count is that the general morphology of a
gliding patagium stretched between the fore and hind legs and with no
internal skeletal support has evolved at least nine separate times in
various mammal(-iform) lineages: the new beastie, the presumed but so-far
undiscovered ancestor of bats,

Since bat patagia have an internal skeletal support (the fingers), isn't it likely that their ancestor did also?

Isn't it also possible that a fore/hindlimb gliding patagium in bat ancestors simply migrated further up the forelimb, with webbing later forming between the digits and eventually fusing with the original patagium?


Dann Pigdon
GIS / Archaeologist         http://www.geocities.com/dannsdinosaurs
Melbourne, Australia        http://heretichides.soffiles.com