The Sauroposeidon is believed to be the largest dinosaur and creature to have ever walked the earth. The Sauroposeidon stood at 18 m (60 ft) tall and weighed 60 tons (132,277 lb). The length of its neck is about a third larger than that of the Brachiosaurus, its nearest competitor. It lived about 110 million years ago, during the mid-Cretaceous period.
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