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Hairy Hypsilophodontids

I vaguely remember reading somewhere that a skin
impression believed to belong to _Hypsilophodon_
showed signs of pitting similar to that of chicken
skin post-plucking, and therefore showing a
possibility of at least bristles, if not feathers.
Does anybody else know of this specimen, or have I
dreamt it?

I ask as, although my dinosaur systematics are a bit
rusty, I recall reading of the discovery of bristles
on the tail of a psittacosaurid, and I was under the
impression that psittacosaurids were an "offshoot" of
the ornithopoda. Could these bristles be a remnant of
their hypsilophodontid, or even ornithopod, ancestry,
or are they just a derived feature which appeared in
the psittacosaurids and then disappeared, or are there
examples of bristles in other marginocephalians?

Simon M. Clabby

Find out about the dinosaurs of the Isle of Wight at
   DinoWight- The Dinosaurs of the Isle of Wight

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