Abstract: A petrified wood was described in the floor sandstone of Coal No. 20 of Taiyuan Formation at Xinqiao Coal Mine, Xuzhou Coal Field, Jiangsu Province. Although the anatomical characters of the wood are close to those of Dadoxylon Endlicher, it is different from all the other pycnoxylic woods (include Dadoxylon Endlicher) described from Carboniferous and Permian in the world in possessing ray tracheids. So a new name Szeioxylon xuzhouense gen. et sp. nov. is suggested for this wood. It is named as a new genus Szeioxylon is in honor of Dr Sze Hsinehien, a famous paleobotanist for study of petrified woods in China.

Key words: Xuzhou coal field, Taiyuan Formation, Petrified wood, Szeioxylon xuzhouense gen. et sp. nov.