Sitting with Ana, Ned, and their friend, Dave, at La Cocina on West 85th Street. "Bring me back a dinosaur bone!" I call out to Dave, a man I've known for about an hour, as he runs to his nearby apartment to get a book to show Ana. He returns mere moments later with a portion of (and I pulled out my notebook and wrote this down to make sure I got this right) the distal end of the ulna of a hadrosaur, late cretaceous period, approximately 65 million years old.