Re: half-evolved feathers

Bill Hamilton (
Mon, 06 Apr 1998 09:05:34 -0400

Glenn MOrton wrote

>Feduccia and Wild relate:
>"Megalancosaurus, in combination with Longisquama, a Lower
>Triassic thecodont with featherlike scales and furcula, render
>this group (basal archosaurs, including thecodonts) the most
>liekly candidate for proximity to avian ancestry."~A. Feduccia
>and R. Wild, "Birdlike Characters in the Triassic Archosaur
>Megalancosaurus," Naturwissenschaften, 80(1993):564-566
Do they explain what evidence they found of feather-like scales? Did the
scales actually fossilize? Or were they working with impressions, perhaps
left in mud that hardened and was preserved? I'd go check this myself, but
my German isn't very good.

Bill Hamilton
Staff Research Engineer
Chassis and Vehicle Systems
GM R&D Center
Warren, MI