Archaeopteryx could flap its wings and fly, not just glide, despite lacking several features considered essential to flight in modern birds. The famed dino-bird lived about 150 million years ago and was crucial in recognizing that birds are dinosaurs.

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Archaeopteryx could flap its wings and fly, not just glide, despite lacking several features considered essential to flight in modern birds. The famed dino-bird lived about 150 million years ago and was crucial in recognizing that birds are dinosaurs.