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Reanalysis of 4-Winged Dinosaur May Illuminate Evolution of Bird Flight

Microraptor gui

RALEIGH, N.C.—How did the ancestors of birds evolve the ability to fly? That birds are descended from small, meat-eating dinosaurs is established. Exactly how the creatures conquered the air remains a mystery, however. Now the authors of a new study of a controversial feathered dinosaur say they have resolved a key aspect of the problem—namely, [...]

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