中生代的动植物在新生代无法生存。
Plants and animals from the Mesozoic era were unable to survive in the Cenozoic era.
在最后一层白垩纪岩石和第一层新生代岩石之间，常常有一层薄薄的粘土。
Between the last layer of Cretaceous rock and the first layer of Cenozoic rock, there is often a thin layer of clay.
撞击表明了前新生代盆地的结构，残余厚度和地下三分性。
Pre-Cenozoic basin structure, residual thickness and trichotomous property of basement are all shown by the impact.
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