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The 10 Most Important Dinosaurs You've Never Heard Of

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Sinosauropteryx
sinosauropteryx

Sinosauropteryx (Emily Willoughby)

Quick poll: how many of you have heard of Archaeopteryx, and how many of you have heard of Sinosauropteryx? You can put down your hands: Archaeopteryx may be famous as the first feathered proto-bird, but Sinosauropteryx, which lived about 20 million years later, was the genus that made feathered dinosaurs a household phrase. The discovery of this toddler-sized theropod in China's Liaoning fossil beds caused a worldwide sensation, but Sinosauropteryx has since been eclipsed by even better-preserved tufted dinos.
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