July 25, 1976 (, hare on June 29), Yunnan Yuanmou ape age is measured for the first time. 25, July

1976 Academy of Geological Sciences Institute of Geomechanics, recently adopted by paleomagnetic methods, Yuanmou ape-man's age was measured for the first time about 170 million years ago, our country past the earliest discovered The ape-man era pushed forward more than 100 years; identified Yuanmou Formation 1500000-310 million years ago, thus the history of Quaternary Geology before 200 million years.