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Re: Psittacosaurus bristle article in Naturwissenschaften online

To my chagrin, it won't let me log in. Do you have to be a subscriber in
order to access the link?

Student of Geology
P.O. Box 20840
Flagstaff, Az. 86011
AIM: TarryAGoat
----- Original Message -----
From: <bh480@scn.org>
To: <dinosaur@usc.edu>
Sent: Thursday, July 18, 2002 9:30 AM
Subject: Psittacosaurus bristle article in Naturwissenschaften online

> From: Ben Creisler bh480@scn.org
> In case this has not been mentioned yet, the
> Naturwissenschaften site has a preprint version of an
> article about Psittacosaurus bristles:
> Mayr, Gerald Mayr, D. Stefan Peters, Gerhard Plodowski and
> Olaf Vogel, 2002. Bristle-like integumentary structures at
> the tail of the horned dinosaur Psittacosaurus.
> Naturwissenschaften, DOI 10.1007/s00114-002-0339-6
> Published online: 17 July 2002.
> Abstract. A specimen of the horned dinosaur Psittacosaurus
> from the early Cretaceous of China is described in which
> the integument is extraordinarily well-preserved. Most
> unusual is the presence of long bristle-like structures on
> the proximal part of tail. We interpret these structures
> as cylindrical and possibly tubular epidermal structures
> that were anchored deeply in the skin. They might have
> been used in display behavior and especially if one
> assumes that they were colored, they may have had a signal
> function. At present, there is no convincing evidence
> which shows these structures to be homologous to the
> structurally different integumentary filaments of theropod
> dinosaurs. Independent of their homology, however, the
> discovery of bristle-like structures in Psittacosaurus is
> of great evolutionary significance since it shows that the
> integumentary covering of at least some dinosaurs was much
> more complex than has ever been previously imagined.
> http://link.springer-
> ny.com/link/service/journals/00114/contents/02/00339/paper/
> s00114-002-0339-6ch110.html