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Press Release 06-026

Scientists Discover Oldest-Known and Most-Primitive Tyrannosaur

Fossil find sheds new light on origin of Tyrannosaurs, establishes new dino genus and species

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Scientists have discovered the oldest known relative of <i>T. rex.</i>

Scientists have discovered the oldest known relative of T. rex.

Credit: Zhongda Zhang, Institute of Vertebrate Paleontology and Paleoanthropology


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