虽然在地质记录中有十几次甚至更多的大灭绝，但白垩纪的大灭绝总是引起古生物学家的兴趣，因为它标志着恐龙时代的结束。

While there are a dozen or more mass extinctions in the geological record, the Cretaceous mass extinction has always intrigued paleontologists because it marks the end of the age of the dinosaurs.

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然后从沉积微相分析入手，研究了沉积相标志，包括地层岩石的颜色、沉积构造、粒度分布、古生物学等。

Then, beginning with the microfacies, signs of sediment facies, including rock's colour, sediment structure, granularity distribution, fossil and so on, are studied.

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然后，结合传统的标志层法、煤岩学及古生物学方法，对该区主要煤层进行对比。

Later in the paper, a correlation between the main coal-seams in this province is made, in combination with the traditional method of the key bed, coal petrography and palaeontology.

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