黑龙江省嘉荫地区乌云组地质时代的商榷

冯广平王宇飞李承森

Reconsideration of the Geological Age of the Wuyun Formation, Heilongjiang Province, China

FENG Guang-Ping WANG Yu-Fei LI Cheng-Sen

植物学报 . 2000, (专辑): 74 -83 .