最晚的化石记录分别发现于北美的中中新世、欧洲的上新世和亚洲的更新世。
Youngest occurrences were found from the Middle Miocene of North America, the Pliocene of Europe, and the Pleistocene of Asia.
在系统分析北部湾盆地涠西勘查区地震剖面的基础上，认为北部湾盆地涠西勘查区发育两期反转构造即渐新世末期及中新世末期反转构造。
It was indicated that there were two different inversion structures formed in two period based on analysis of seismic profiles in Weixi exploration region of the Beibuwan Basin.
该地区分布着两百余座大大小小的火山，形成于中新世、上新世和更新世。
There are more than 200 volcanic hills, mainly occurring in the Miocene, Pliocene and Pleistocene in the region.
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