2-Million-Year-Old Teeth Reveal Secrets from the Dawn of Humanity: Ancient Proteins and Enamel Pits Rewrite Human Evolution | #2 million year old teeth # Paranthropus robustus # ancient proteins enamel # paleoproteomics human evolution # enamel pits fossil teeth # early hominin genetics # Cradle of Humankind fossils # Omo Valley hominins # human evolutionary tree # ancient tooth protein analysis