Small ancestor of giant sauropods unearthed | Science News

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Small ancestor of giant sauropods unearthed

Fossils suggest bipedal dinosaur occasionally walked on all fours, could open its mouth wide to gather foliage

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6:49pm, November 10, 2009
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Fossils of a newly discovered ancestor of gargantuan sauropod dinosaurs, a group that includes the tree-browsing brachiosaurs of Jurassic Park, show hints of several anatomical traits that allowed subsequent kin to become so huge.

The fossil record suggests that sauropods, some of the largest creatures ever to live on land (SN: 6/23/01, p. 397), evolved from a small bipedal dinosaur, says Matthew Bonnan, a vertebrate paleontologist at Western Ill
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