The most widely known theory of the prehistoric peopling of the Philippines is that of founder of the Anthropology Department of the University of the Philippines. Heading that department for 40 years, Professor Beyer became the unquestioned expert on Philippine prehistory, exerting early leadership in the field and influencing the first generation of Filipino historians and anthropologists, archaeologists, paleontologists, geologists, and students the world over. According to Dr. Beyer, the ancestors of the Filipinos came in different "waves of migration",
