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20世纪末 ,中国科学院古脊椎动物与古人类研究所专门组织辽西野外队 ,在近几年来一再向世界惊现奇观的中生代热河生物群化石产地———辽宁省西部展开大规模考察和发掘。 2 0 0 0年夏 ,在朝阳县上河首下三家子的九佛堂组火山凝灰质湖相沉积岩中发现了一具小巧玲珑得可在人手掌?
At the end of the 20th century, the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, organized a special team of western Liaoning field teams to conduct large-scale inspection and excavation of the Mesozoic Jehol Biota Fossil Origin-West Liaoning Province, which repeatedly surprised the world in recent years. In the summer of 2000, a small and exquisite mankind was found in the volcanic tuffaceous sedimentary rocks of the Jiufotang Formation in Sanjiazi, the first of the Shanghe River, Chaoyang County.