甘蒙交界北山地区早白垩世地层梳理及时代归属新见*
, 刘国龙New scheme for subdivision and age determination of the Lower Cretaceous of Beishan area near Gansu-Inner Mongolia border,China
ZHANG Mingzhen1 , LIU Guolong1 , DAI Shuang2 , CHEN Shiqiaing3 , LI Aijing2 , JIAO-BA Dunzhu1 , ZHANG Jing2 , LIN Shaohua2
, LIU Guolong