[endthematrix]

"Previously, the bird-dinosaur relationship was based on similarities in the shape of bones"

...and the fact some fossils have feathers.

[cookcounty]

"...and the fact some fossils have feathers.

Ah yes, Areopterix, the Piltdown Bird, or better-than-Piltdown Bird. Discovered by enthusiasts in the back yard as soon as the ink was dry on Origin of the Species and then ........................................................................................................................................................................................................................