• 责任者：Wu Liwen (Institute of Geological Survey of Inner Mongolia ; Huhhot 010020 ; China) ; Tan Qiang
• 刊名：Journal of Stratigraphy
• 出版年：2010
• 卷期：34(1)
• 关键词：早泥盆世 ; Lower Devonian ; 生物地层学 ; biostratigraphy ; 内蒙古 ; Inner Mongolia
• 页码：p.51-55
• 图表：3 illus., 22 refs.
• 分类号：1200
• issnNo：ISSN0253-4959
• isbnNo：CN32-1187/P

During mapping in the Handagai area of Xinbaerhu Left County, Inner Mongolia in 2007, the authors discovered the Early Devonian fossils in the limestone of the Duobaoshan Formation that was formerly mapped as a Middle Ordovician stratigraphic unit. These fossils include the conodonts Pseudooneotodus beckmanni, Belodella resima, Belodella devonica, ?Caudicriodus sp., the tentaculites Nowakia sp., ? Homoctenus sp., Ostracoda Tricornina sp., Praepilatina sp., Tetrasaculus sp., and Microcheilinella sp.. These fossils suggest that an Early Devonian age and the fossiliferous limestone is mapped as the Niqiuhe Formation.