Abstract
In the context of a Thai-French paleontological project, a single human tooth, a right upper fourth premolar, has been discovered in Northern Thailand among mammalian fossil remains excavated from the "Thum Wiman Nakin" cave. Based on the fauna associated with the human tooth and the Uranium/Thorium datings from the overlying calcite beds, we attribute this site to the Late Middle Pleistocene. The human tooth was compared with teeth of Chinese and Javanese Homo erectus, Homo sapiens neanderthalensis and Homo sapiens sapiens as well as teeth of apes (Orang-utan). The tooth has archaic features of the crown which are similar to Homo erectus. It also has derived features of the root which makes it aligns with Neanderthals and modern humans. Consequently, it has been tentatively attributed to Homo sp. Homo remains have not been previously reported from Thailand, and the specimen described here is therefore the first and oldest fossil human remain from this country.
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