Photo taken on Oct. 9, 2011 provided by the Institute of Archaeology of Hunan Province shows a teeth fossil discovered at a cave in Daoxian County in central China's Hunan Province. Tooth fossils found in Daoxian indicate the early form of modern homo sapiens appeared in the region more than 80,000 years ago. The 47 fossils date back from 80,000 to 120,000 years and are believed to be the oldest remains of a completely modern form scientists have known in the east Asia region, the study's leading scientists said on Oct. 15, 2015. (Xinhua)
