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The top documents tagged [origins of birds]
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origins of birds
Evolution of Birds. Birds have a single occipital condyle, just like reptiles Features that unite birds and reptiles (archosaurs)
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The Origins of Birds, Feathers, and Flight Feathered Dinosaurs and the Origin of Birds Class Aves: ~9700 extant species; exhibit feathers and wings; keratinized.
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Evolution of Birds
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