Via Scientific American (9/24):
... The dinosaur-bird transition has been the subject of debate for more than a century, and some researchers are still arguing that other bird-like dinos are too recent to be the ancestors of birds. The quandary, known in the paleontology field as the temporal paradox, has been dealt another blow by the reassessment of the A. huxleyi, which is dated to about 155 million years old—about 30 million years before the feathered dinosaur Microraptor and about five million years before the oldest known bird, Archaeopteryx. This earlier date for the emergence of feathered dinosaurs undermines claims that birds lacked enough time to evolve from dinosaurs... read on... (Image: Xing Xu et al.)
