feathers and wings and wishbones and beaks and all of these things we think of as characteristic features of birds actually evolved tens, hundreds of millions of years ago in t-rex type of dinosaurs. now we can add this one to the list. we now know that some dinosaurs, maybe even many dinosaurs, even developed in their eggs just like birds today. and evening that makes them so relatable. i think when you look at a fossil like this, you re not seeing a movie monster. you re not seeing some colossal prime evil beast, you re seeing an animal that was growing, that was developing and that gives us a sense for dinosaurs as real living, breathing, growing animals that ruled our world so long ago. your enthusiasm is infectious here. look, we ve all seen jurassic park. how is it that this egg is so perfectly preserved? it wasn t amber, which is what it was in the movie. do you know? it s a great question.