Monterey Jack and I were discussing this find when he brought it up in another thread. Theropod linneages to birds have always mentioned "protofethers" as one of the necessary prt of the "bird evolution kit"
Yet in the past decade, we dont get to highlight (more importantly) the many reports of the other groups of saurischian and ornithischian dinosaur families that sported FEATHERS.
I was especially interested in the evolution of the family "ceratopsia",
which contained the vegetarians like di-ceratops, triceratops etc etc.
The earliest of these species actually showed both proto-feathers and scales in some of the earliest (late J and early K fossils). There werent a lot of specimens cause the feathers fossils need fine grain
sediments so we can actually see em. What then happened in the fossil record is that feathers were apparently less a successful an option and by the end of the K, all the ceratopsians were bearing scales.
This sorta made the argument that most all species of dinosaurs (not just coeleosaurians or troodonts or the rest of the raptors) carried feathers because they were possible the best candidates for birdie evolution.
Just remember though, birds first made their appearances a couple of weeks before these specimens. It appears that feathers are just one more of a series of body cover options that nature was futzing with