Proteins found in ancient teeth are providing new insights into human evolution, potentially revealing hidden family connections and surprising twists in the human family tree. The discovery, which involves teeth estimated to be hundreds of thousands to millions of years old, may indicate links between different ancient human species. However, the findings and their implications are not entirely clear, with some reports suggesting a possible connection to Denisovans and Homo erectus, while others mention Homo naledi and a controversial burial site.