https://blog.wongcw.com/2022/09/08/%e5%8f%a4%e7%94%9f%e7%89%a9%e5%ad%b8%e5%ae%b6%e4%bd%bf%e7%94%a8%e5%8c%96%e7%9f%b3%e7%89%99%e9%bd%92%e8%a8%98%e9%8c%84%e7%a2%ba%e5%ae%9a%e5%b7%b2%e7%9f%a5%e6%9c%80%e6%97%a9%e7%9a%84%e5%93%ba%e4%b9%b3/
古生物學家使用化石牙齒記錄確定已知最早的哺乳動物