10/24/2013

An ancient ancestor of modern carpenter bees abruptly disappeared about 65 million years ago, about the same time as dinosaurs, according to a study published online in PLoS ONE. "We found this mass extinction event signature in the DNA that just happened to correspond to the extinction of dinosaurs, which was a major change in the global diversity at the time," said University of New Hampshire professor Sandra Rehan, the study's lead author. The researchers, who analyzed DNA sequences and used fossils of other types of bees as reference points, say the bee extinction lasted about 10 million years.

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