When Birds Had Teeth

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Experts are still arguing over whether Archaeopteryx was a true bird, or a paravian dinosaur, or some other kind of dino. But regardless of what side you’re on, how did this fascinating, bird-like animal relate to today’s birds? It turns out its teeth were a clue that this story goes all the way back to what we now call the non-avian dinosaurs.

Thanks to Ceri Thomas for the excellent Longipteryx reconstruction. Check out more of Ceri's paleoart at   / alphynix   and http://nixillustration.com

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