The morphological features of Little Foot did not align with specimens of A. prometheus or another close relative, A. africanus. In 1998, paleoanthropologist Ronald Clarke and his research team discovered the skull of a previously unknown human ancestor in South Africa’s Sterkfontein Caves. Without enough evidence to definitively relate Little Foot to MLD1, Little Foot cannot be officially attributed to A. prometheus. As a result, Martin found no reason that the Little Foot skull was morphologically similar enough to other A. prometheus specimens to warrant being classified as such. But if Little Foot is a new species, there is one thing he plans on.