Researchers found Homo luzonensis, a previously unknown small-bodied hominin. It lived on Luzon island at least 50,000-67,000 years ago. Identified from seven teeth and six small bones. Displays patchwork of ancient and advanced features. Luzon becomes third Southeast Asian island with ancient human activity in 15 years. Discovery adds new branch to humankind's tangled ancestry shrub. Challenges outdated linear progression from primitive to advanced human species. Philippine islands previously overlooked in human origins research.