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新疆塔里木盆地塔中中2井上奥陶统牙形刺化石及生物礁发育时代

Xiyao CAI,Xiaohong YUAN,Yasheng WU

Acta Micropalaeontologica Sinica（2014）

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Abstract
首次在新疆塔里木盆地塔中地区中2井上奥陶统良里塔格组礁岩中发现保存精美的牙形刺化石,包括6属13种和未定种,含一个新亚种Belodina longxianensis minor subsp.nov..根据牙形刺化石确定,良里塔格组上部属于上奥陶统中部的Belodina con fluens带.中2井良里塔格组第2-4层生物礁发育的精确时代是Belodina confluens带.
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