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Insects and their DNA

 Insects and their DNA
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An extensive new study by British scientists, which has used DNA sequences from 1,880 beetle species from all over the world, hints that modern-day versions of the insects are far older than any tyrannosaur that trod the Earth.

Today’s plethora of beetle species was thought to have blossomed 140 million years ago. But the recent study pushes their appearance back to 300 million years ago. That beats the arrival of dinosaurs by about 70 million years.