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RE: coelophysis



Based on our understanding of the theropod family tree and the fossil record
of feathers in non-avialian theropods, it appears that all (or nearly all --
depending on the status of _Juravenator_) coelurosaurs -- those dinosaurs
more closely related to birds than to _Allosaurus_ -- would have possessed
feathers.  

On the other hand, _Carnotaurus_ apparently did not, as tubercular scale
impressions were recovered associated with a _Carnotaurus_ specimen.  Given
the closer relationship between _Coelophysis_ and _Carnotaurus_ as compared
to _Coelophysis_' relationship with coelurosaurs, it appears most likely
that _Coelophysis_ was covered in tubercular scales as opposed to feathers.


See
http://www.newscientist.com/channel/life/dinosaurs/mg18625001.900-dinosaur-s
pecial-welcome-to-dinotopia.html and
<http://www.newscientist.com/data/images/archive/2500/25001903.jpg>
http://www.geol.umd.edu/~tholtz/G104/lectures/104therop.html

Cheers,
---Ralph


Dino Guy Ralph
Docent at the California Academy of Sciences
Dinosaur and Fossil Education
Member of the Society of Vertebrate Paleontology