Gastornis (also known as Diatryma) was a large flightless predatory bird that lived during the Paleocene and Eocene epochs of the Paleogene period.
It was about 1.75 metres (5.7 ft) tall, but large individuals grew up to 2 metres (6.6 ft) tall. Gastornis had very large beak that had a slightly hooked top. Its feet were large and taloned.
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