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Caption: Archaeopteryx, the "feathered" dinosaur of the late Jurassic period, is considered the first known bird.
Credit: Album / Universal Images Group / Encyclopaedia Britannica
Image size: 2550 × 2009 px | 14.7 MB
Print size: 21.6 × 17.0 cm | 1003.9 × 790.9 in (300 dpi)