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Diggin’ dinos

Enigmatic structures in Australian rocks may be the filled-in remains of world’s oldest dinosaur burrows

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3:50pm, July 20, 2009

Three enigmatic structures embedded in 106-million-year-old Australian rocks may be the remains of dinosaur burrows that were filled in by an ancient flood, a new study suggests. If that’s true, these fossils represent the oldest known dinosaur burrows and the first found outside North America.

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