The "Tabon Man" fossils are considered to have come from a third group of inhabitants, who worked the cave between 22,000 and 20,000 BCE. An earlier cave level lies so far below the level containing cooking fire assemblages that it must represent Upper Pleistocene dates like 45 or 50 thousand years ago. Researchers say this indicates that the human remains were pre-Mongoloid, from about 40,000 years ago. Mongoloid is the term which anthropologists applied to the ethnic group which migrated to Southeast Asia during the Holocene period and evolved into the Austronesian people (associated with the Haplogroup O1 (Y-DNA) genetic marker), a group of Malayo-Polynesian-speaking people including those from Indonesia, the Philippines, Malaysia, Malagasy, the non-Chinese Taiwan Aboriginals or Rhea's.