
U.S. University at Buffalo Study Finds Human Chin Evolved as Evolutionary Accident, Not Adaptation
University at Buffalo anthropologist Dr. Noreen von Cramon-Taubadel and team have shown the human chin—unique to Homo sapiens—is an evolutionary spandrel, not an adaptation for chewing or speech. Published in PLOS One, the study tested neutral evolution against selection models and found chin traits fit the byproduct hypothesis. The research challenges adaptationist assumptions and reframes how distinctive fossil features are interpreted.














