It is well known that the crania of modern humans are substantially different from those of their ancestor and sister species. However, humans usually recognize each other by looking at "faces" and not at "profiles". Therefore, this research study has been dedicated to comparing facial structures among humans and their ancestor species. After comparing many evolutionary branches that played a role in the evolution of modern humans, many different shape changes have been recognized. Additionally, we can see how modern humans evolved, in comparison to other sister species. After the recent discovery of the new species, "Homo platyops," sometimes referred to also as, "Kenyanthropus platyops," it has become difficult once again to choose an "accurate" evolutionary tree. However, using a tree proposed by Cela Conde, C.J. Ayala and F.J. Ayala, it is noticed that most of the tree proposals can be simplified into one. Because of this simplification, the analysis thereafter would be much more dedicated to analysis, and much less dedicated to choosing the "right" tree to analyze.

Funding Provided by the Simons Summer Research Fellowship Program at State University of Stony Brook.