This belief that dinosaurs were feathered seems to be relatively recent. Have any digs bore this out, or is it an assumption based on genetic similarity to birds?

@1 - I know that in the case of Velociraptors, they found "quill-nobs" on their skin, which is pretty widely accepted as being proof that they had feathers. Velociraptors also have hollow bones and incubated their eggs in nests, so I'm sure those other signs pointing to "BIRD" play some part in the acceptance of the idea that they were feathered. Don't know about other dinos, though.

Ha! Nice vestigial forelimbs, sucker.