Brian Roebuck
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Caver
Caving - the one activity that really brings you to your knees!
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Post by Brian Roebuck on May 18, 2010 5:35:54 GMT -5
Theories differ on whether sonar sense evolved before or after ability to fly The scientists who discovered Onychonycteris finneyi, the oldest known bat fossil, concluded that the prehistoric species could fly but that the sonar sense didn't evolve until later. But a recent study reinvigorated the echolocation-versus-flying timeline debate. www.msnbc.msn.com/id/37156174
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