Foramen magnum: A large hole at the underside of the skull where the spinal cord enters ... "Homininae," in Ardipithecus kadabba: Late Miocene Evidence from the Middle Awash, Ethiopia, eds.

Ardipithecus ramidus may have walked upright ... robustus had a large, "robust" (heavier, thicker) skull, as well as a jaw and large teeth that were well adapted to chewing.

In Ethiopia, they found hominid skull, jaw, and arm bones plus a few ... Discussion continues over whether Ardipithecus is a hominid or not, whether it walked on two feet or not, and what its ...