Rise of the fuzzy dinosaurs

@article{Switek2012RiseOT,
  title={Rise of the fuzzy dinosaurs},
  author={Brian Switek},
  journal={Nature},
  year={2012}
}
An exceptionally well-preserved fossil hints that all dinosaurs might have modelled protofeathers. 

References

Exceptionally preserved juvenile megalosauroid theropod dinosaur with filamentous integument from the Late Jurassic of Germany
TLDR
Sciurumimus albersdoerferi represents the phylogenetically most basal theropod that preserves direct evidence for feathers and helps close the gap between feathers reported in coelurosaurian theropods and filaments in ornithischians, further supporting the homology of these structures.