Youngolepis

Youngolepis is a genus of prehistoriclungfish which lived during the Early Devonianperiod (Lochkovian to Pragianstages, about 407-416 million years ago). Fossils of Y. praecursor have been found in the Xitun Formation of China & the of Trang Xa, Vietnam. Some additional fossil specimens from the Xishancun Formation of China have been referred to Youngolepis sp. & represent the oldest known occurrence of the genus. In addition, Y. praecursor is also found in the