Dinosaur extinction, iridium evidence

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Dinosaur extinction, iridium evidence

Clip from Catastrophe  |  Season 1  |  Episode 2  |  SBS  |  January 16, 2011

Trace amounts of a rare metal have been found in rock layers dating back 65 million years. It is strong evidence for an asteroid impact killing off the dinosaurs.

Trace amounts of a rare metal have been found in rock layers dating back 65 million years. It is strong evidence for an asteroid impact killing off the dinosaurs.

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