甘蒙交界北山地区早白垩世地层梳理及时代归属新见*
张明震1, 刘国龙1, 戴霜2, 陈世强3, 李爱静2, 交巴顿珠1, 张静2, 林少华2

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
甘蒙北山地区下白垩统马鬃山组岩性序列(据 Tang et al ., 2001 )及其典型层位照片 1—马鬃山组地层露头照片; 2—马鬃山组钻孔岩心照片。化石左侧箭头指示化石所在具体层位