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2008年12月在贵州毕节团结乡首次发现麻窝口洞化石点,经2009年、2012年和2013年3次发掘,在麻窝口洞上部砂质黏土地层中共发现了四千余件哺乳动物牙齿化石。2013年7月发现的3枚古人类牙齿,分别为左上犬齿、左上第一臼齿和右上第二臼齿。人类牙齿尺寸偏小,臼齿咬合面沟纹简单,没有复杂的咬合面皱纹和附尖齿带结构,牙根短而不显粗壮,上述特点有别于我国已经发现的直立人和早期智人,可归入解剖学上的现代人。与人类相伴的哺乳动物化石,经初步鉴定共计8目20科43属53种,动物群组合反映出亚热带森林生态环境。根据动物群的时代特点,地貌地层及堆积物的光释光年代测定,指示毕节麻窝口洞古人类的时代可能为中更新世晚期,或者晚更新世早期,毕节古人类牙齿的发现为东亚地区现代人的起源及演化增添了新的证据。
In December 2008, the fossil spot of Maowo Kou Kou was first discovered in Tuanjie Township, Bijie, Guizhou Province. After more than three excavations in 2009, 2012 and 2013, more than 4,000 mammals were found in the sandy clay layer of the Maotoukou Cave Fossil teeth. Three ancient human teeth, discovered in July 2013, are the upper left canine, the upper left first molar and the upper right second molar, respectively. Human teeth size is small, the molars occlusal surface groove simple, no complex occlusal surface wrinkles and attached cusp structure, short but not stout roots, the above characteristics are different from our country has been found in Homo sapiens and early Homo sapiens, Into the anatomy of modern people. Mammal fossils associated with human beings, preliminary identification of a total of 8 orders and 20 families and 43 genera and 53 species, animal assemblages reflect the subtropical forest ecological environment. According to the epoch characteristics of the fauna, the photoluminescence dating of geomorphic stratigraphy and sediment indicates that the age of the mankind in the Mochikou hole of Bijie may be the late Mid-Pleistocene, or early in the late Pleistocene, and the discovery of the ancient human teeth in Bijie is East Asia The origin and evolution of modern people in the region added new evidence.