Abstract: The wood fossils were collected from Ping-zhuang Coal Mine, Chi-fong city, Inner Mongolia. There are two sets of sediments. The upper one was considered to be Miocene, Tertiary; the lower one was late Mesozoic. Among the upper one is the bed which contained the wood and other leaves fossils. Three species of wood fossils among them had been identified. They are Pseudotsugaxylon pingzhangensis sp. nov., Piceaxylon manchuricum Sze.

Key words: Fossil wood