Scan of PRI Fossil May Hold Elephant Key

"Living elephants have strange anatomy compared with most other animals," Hutchinson wrote about the project. "They have long, thin thigh bones, the femur, that are almost solid without a marrow cavity, and stubby five-toed feet that are posed 'tiptoe' on squishy pads of fat and fibrous tissue... Rhinoceroses, hippopotami and other large living and extinct mammals have somewhat similar anatomy, but elephants still stand out as having extreme anatomy in these regions."

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