Archetype » Archaeopterix http://roberto.kellerperez.com Ant reconstruction one homology at a time Tue, 17 Aug 2010 17:27:09 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 More dinosaur than we thought http://roberto.kellerperez.com/2009/11/more-dinosaur-than-we-thought/ http://roberto.kellerperez.com/2009/11/more-dinosaur-than-we-thought/#comments Thu, 05 Nov 2009 23:21:29 +0000 Roberto Keller http://roberto.kellerperez.com/?p=1658 Familiar to many, you can know how old a tree is and how fast it has grown by counting the number of rings in a cross section. Well, you can do the same with the long bones of vertebrates.

Now Gregory M. Erickson and co-workers published a paper in which they did just that to a specimen of one of the most famous fossil forms around: Archaeopterix. Watch Mark Norell, paleontologist from the American Museum of Natural History and co-author of the paper, explain the results:

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