PhysOrg Posted August 10, 2016 Share Posted August 10, 2016 What really did come first—the chicken or the egg? Birds' reproductive biology is dramatically different from that of any other living vertebrates, and ornithologists and paleontologists have long wondered how and when the unique features of bird reproduction originated. A new Review in The Auk: Ornithological Advances examines answers from three sources—modern birds, fossils of primitive birds, and fossils of the dinosaurs from which birds are descended—to shed new light on the subject. Read the full article on PhysOrg Link to comment Share on other sites More sharing options...
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