This article seeks to show the interaction between cultural and anatomic evolution in the birth and differentiation of cultures and languages. The diversity which characterizes our world does not preclude logical regularities due to the coherence of the human mind, which evolved slowly through the paleontological phases of its emergence over millions of years. The anatomical retroaction of the hominids is analyzed to show that, in the long run, anatomy reflected ‘cultural selection’. With the anatomic evolution of man, culture became a crucial component for all human beings and their anatomy simply adapted progressively to this fact.