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    • Recent Advances in the Small Mammal Biochronology and Magnetostratigraphy of Lanzhou Basin 

      Flynn, Lawrence John; Xiaoming, Wang; Downs, Will; Opdyke, Neil; Huang, Kainian; Lindsay, Everett; Ye, Jie; Xie, Guangpu (SpringerOpen, 1999)
      The consensus view among geologists is that the Lanzhou Basin sequence of sediments contains the Oligocene/Miocene boundary, but where this occurs is unknown. Indeed, this is the crux of the issues concerning mid-Tertiary ...