[VadeRetro]

Under the supervision of professor Anthony Russell, Longrich examined Archaeopteryx fossils and determined that the dinosaur's leg feathers have an aerodynamic structure that imply its rear limbs likely acted as lift-generating "winglets" that played a significant role in flight.

Oh, but it's a bird! Just a bird! Really!

Just a bird with teeth, unfused forelimb claws, lots of tail bones, a flat sternum, and--now we see--flight feathers on its legs.

For a better known and more obvious "four-winger," see Microraptor gui.

Google.

[PatrickHenry]

You got no evidence!
</creationism mode>

[grey_whiskers]

Looks more like a Phoenix to me.

Full Disclosure: Only mid-90's today. It's finally cooling off. :-)

Cheers!

[WizWom]

Re: Microraptor Gui

er, I'm looking at the image of the cast, the feathers are painted on with iron oxide. There are no impressions.