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Re: Deinocheirus (was Sauropodz r kewl WAS: silly conversation on 2012 US presidential race)
On Fri, April 20, 2012 7:45 pm, Joe Gilvary wrote:
> Is it possible that feathers started as some kind of quill like
> structures for protection from predation, or as some sort of offensive
> capability? The central quill in the feathers I've seen looks like
> variants could be sharp enough to be part of a creature's weaponry.
Possible? Yes, quite possible. DIfficult to demonstrate at present.
At least some developmental models show the quill as the first stage in
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Science & Global Change Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA