three hominin heads showcase the progression of human evolution through distinct features

animal mammal head wildlife primate ape monkey zoo art nose sculpture face gorilla macaque statue eye portrait human evolution hominins anthropology primates species comparison profile view evolutionary biology anatomy cranial features genetic traits ancient humans evidence fossil records adaptive paleoanthropology archaeological findings historical timeline biological diversity development natural selection evolution theory heritage ancestry cognitive survival adaptation research extinct species cultural early ancestors studies biodiversity ecological patterns behavior milestones lineage anatomical juvenile adult characteristics comparative history progression evidence