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Archaeopteryx (meaning "ancient wing") was a theropod dinosaur that is closely related to birds. It lived in the

Archaeopteryx hmie72

Late Jurassic Period around 150 million years ago.

It was described as the "first bird" but some more recent studies have cast doubt on this assessment, finding that it is instead a non-avialan dinosaur closely related to the origin of birds.

Archaeopteryx was roughly the size of a raven, with broad wings that were rounded at the ends and a long tail compared to its body length. It could reach up to 500 millimetres (20 in) in body length, with an estimated weight of 0.8 to 1 kilogram (1.8 to 2.2 lb).

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