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Re: New Oldest Bird?



Anybody want to see photos of the _Pedopenna daohugouensis_, the new small Chinese dinosaur with lengthy leg feathers? See http://www.dinosaur.net.cn/DataBase/p_museum.asp?id=28505. Leg only, unfortunately. That's all there is.

For a listing of many more remarkable dinosaur and bird fossil photos and some restorations, visit the Dinosaur Museum at http://www.dinosaur.net.cn/museum/default.htm.
--------
"Dino Guy" Ralph W. Miller III
Docent at the California Academy of Sciences
proud member of the Society of Vertebrate Paleontology
----- Original Message ----- From: "Jeff Hecht" <jeff@jeffhecht.com>
To: <4mjmu@rogers.com>; "dinosaur mailing list" <dinosaur@usc.edu>
Sent: Thursday, February 17, 2005 2:43 PM
Subject: Re: New Oldest Bird?



At 5:08 PM -0500 2/17/05, mjmurphy wrote:
I haven't seen anyone mention this, ie. a short article in New Scientist concerning Pedopenna daohugouensis, another small Chinese Dinosaur with "large leg feathers" that may be older than archaeopteryx. Story can be found at:

http://www.newscientist.com/channel/life/mg18524874.700


The first sentence calls Pedopenna a dinosaur, and that's the general assumption. It's bird-like in the sense of being part of the same Eumaniraptora clade as Archaeopteryx and Dromeosaurs, but that didn't come across as clearly in the article as I would have liked. (These short pieces are shoehorned into a very small space.) With only a partial leg, it's hard to be definitive about the rest of it, but the foot feathers indicate that feathers on the hind limbs was likely linked to the origin of flight, since Pedopenna, Archaeopteryx and Microraptor all had them.


The big unknown is how old Pedopenna is. It could be older then Archaeopteryx, depending on the interpretation of the age of the deposits. It's definitely pre-Liaoning, although maybe not by much.
--
Jeff Hecht, science & technology writer
jeff@jeffhecht.com; http://www.jeffhecht.com
Boston Correspondent: New Scientist magazine