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Re: Quo vadis, T. rex? [long]
In a message dated 96-02-06 19:49:46 EST, martz@holly.ColoState.EDU (Jeffrey
> Why? You are assuming that feathers evolved in the common ancestor
>of all maniraptorans. It could just have easily have been a later
>innovation of one small group, which eventually led to Archaeopteryx.
>Its largely a question of when feathers first appeared, something that is
Not quite "NOT known."
The peculiar structures seen in _Longisquama_, which strongly resemble (but
are not--or at least not yet) feathers, are the only evidence we have of
what pre-feathers may have looked like. This is from the Late Triassic, and
if they _are_ pre-feathers, then _Longisquama_ should perhaps be considered a