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Distribution of manal phalanges in birds

To: dinosaur@usc.edu
Subject: Distribution of manal phalanges in birds
From: Jason Michalak <jasonbirder@hotmail.com>
Date: Wed, 07 Jul 2004 19:04:10 +0000
Reply-to: jasonbirder@hotmail.com
Sender: owner-dinosaur@usc.edu

I was wondering if someone could help me with this. I know Archaeopteryx and Confuciusornis had a phalangeal formula of 2-3-4, with curved unguals on all three digits. Basal enantiornithines had 2-3-1, with claws on the first two. What about the birds im missing, in particular the more derived ones? What are their phalangeal formulas, and do they have curved unguals?

-Jason-

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