https://www.youtube.com/watch?v=bzvOMee9D1o
特別注意 Neogene (新近紀) (符號 N） 下一紀就是第四紀
The Neogene (informally Upper Tertiary or Late Tertiary) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period 23.03 million years ago (Mya) to the beginning of the present Quaternary Period 2.58 Mya. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene.
https://zh.wikipedia.org/wiki/%E6%96%B0%E8%BF%91%E7%BA%AA
https://en.wikipedia.org/wiki/Neogene
