11. Toes
Scientists found that humans used to walk and balance more on the midline of their feet, but now we have gradually transferred to balancing more toward the side of our big toe. Studies also show that our center of balance is still shifting inward. This means that humans used to rely on their toes for balance, but now they don’t rely on them as much. If this trend keeps up, we will no longer need our toes.
12. Coccyx
It’s also called a tail-bone, and it’s all that’s left of the tail that most mammals still use for balance and communication.
13. Third eyelid
A common ancestor of birds and mammals may have had a membrane for protecting the eye and sweeping out debris. Humans retain only a tiny fold in the inner corner of the eye.
14. Darwin’s Point
A small folded point of skin toward the top of each ear that is occasionally found in modern humans. It may be a remnant of a larger shape that helped focus distant sounds.
15. Subclavius muscle
This small muscle, stretching under the shoulder from the first rib to the collarbone, would be useful if humans were still walking on all fours. Some people have one, some have none, a few have two.
