![](http://www.ecns.cn/hd/2022/04/14/5bcc37ab1d634cfc9cc48f28e7a63fd4.jpg)
Photo taken on April 12, 2022 shows fossils of Dianodipterus huizeensis dating back 390 million years discovered in Huize County, Qujing, southwest China's Yunnan Province. (Photo: China News Service/Sun Zifa)
The tooth-plated lungfish had a new type of dentate plate, which made it unlikely to feed on hard shells like other lungfishes, but on aquatic mollusks or even other fish by sucking.
![](http://www.ecns.cn/hd/2022/04/14/a885c939fc60445194229da5cbd5164c.jpg)
A researcher introduces the discovery in Beijing, April 12, 2022. (Photo: China News Service/Sun Zifa)