The human foot has 26 bones, 33 joints, and over 100 muscles, tendons and ligaments. Yet, most prosthetic feet on the market a consist of a single blade. A new concept from the Italian Institute ...

Small bones and large bones, jawbones and ankle bones, finger bones and foot bones and skulls. The bones belonged to strange creatures that lived a long time ago, before there were humans.

The bones are around 47 million years old and were as large as 2.4 inches long and 4.3 inches wide—sizeable enough that, when they first uncovered the fossils, the researchers thought they had ...