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澄江动物群
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澄江动物群
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Chengjiang fauna
澄江动物群
发现地点位于中国云南澄江帽天山附近,产出在寒武系下部玉案山组黄绿色粉砂质泥岩、页岩中的丰富多样的后生动物化石,特别是那些软躯体保存的特异埋藏化石。
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machine construction design
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machine-learning-based word sense disambiguation approach
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machine-made Copper Coin in modern China
machine-made Silver Coin in modern China
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