FOR KIDS: Shoulder bones fuel debate
Fossil shoulder blades suggest an ancient humanlike species may have been at home in the trees as well as on the ground
Web edition: November 26, 2012
This shoulder blade comes from a 3-year-old humanlike female that lived more than 3 million years ago. It's offering scientists clues to the creature traveled.
Credit: Courtesy of Zeresenay Alemseged/Dikika Research Project
Shoulder blades are the triangular bones that stick out of your back like small wings. Also known as scapulas, they connect different parts of the body. Without these bones, you couldn’t climb a tree. The surprising orientation of these bones in a now-extinct humanlike species suggests it may have been a tree climber.
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B. Bower. Shoulder fossil may put Lucy’s kind up a tree. Science News Online, October 25, 2012. [Go to]