Answer:
The trait that is NOT typical of modern humans is:
A foramen magnum located at the rear of the skull.
Explanation:
In modern humans, the foramen magnum (the hole in the base of the skull where the spinal cord passes through) is located more centrally underneath the skull. This position is associated with bipedalism, as it allows the head to be balanced directly over the spine when walking upright. A rearward location of the foramen magnum is more typical of quadrupedal animals, where the head is positioned in front of the body rather than on top of the spine.