Discovery of conchostracan genus Clithrograpta and its significance in the Dadianzi Formation,Luanping basin,northern Hebei

NIU Shaowu; LI Peixian; TIAN Shugang

Geological Bulletin of China > 2003 > 22(2): 95-104.

NIU Shaowu, LI Peixian, TIAN Shugang. 2003: Discovery of conchostracan genus Clithrograpta and its significance in the Dadianzi Formation,Luanping basin,northern Hebei. Geological Bulletin of China, 22(2): 95-104.

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Discovery of conchostracan genus Clithrograpta and its significance in the Dadianzi Formation,Luanping basin,northern Hebei

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Revised Date: September 24, 2002

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In an intensive study of fossil conchostracans from the Lower Cretaceous Dadianzi Formation in the Luanping basin,northern Hebei,the authors found the genus Clithrograpta W.Wang,1987in the upper part of this formation.It is characterized by occurrence in many beds,large numbers of individuals and a high diversity of species.This discovery provides key and strong paleontological evidence for the stratigraphic division and correlation in the Lower Cretaceous Dadianzi Formation in the Luanping basin,northern Hebei and the correct establishment of the continental Jurassic-Cretaceous stratigraphic framework in northern Hebei-western Liaoning.According to this discovery and the conchostracan assemblage se-quence in the Dabeigou Formation and Xiguayuan Formation,the upper part(3rd and4th Members)of the Dadianzi Formation in the area may be correlated with the lower part(original Daxinfangzi Formation)of the"Yixian Formation"in the Jianchang basin,western Liaoning,suggesting that the lower part(1st and2nd Members)of the Dadianzi Formation of the area is absent in western Liaoning;the Xiguayuan Formation is largely equivalent to the Yixian Formation of western Liaoning.
- Clithrograpta,
- northern Hebei,
- Luanping basin,
- Dadianzi Formation

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	NIU Shaowu, XIN Houtian. 2018: The discovery of the conchstracan fossils in Jiufotang Formation and Shahai Formation of Luanping Basin, north Hebei Province, and discussion of established stage of the land facies strata. Geological Bulletin of China, 37(10): 1801-1819.
	XING Li-da, Gerard D. GIERLI??SKI, Jerald D. HARRIS, Julien D.DIVAY. 2012: 河北赤城地区土城子组中一例极可能的兽脚类恐龙蹲伏迹. Geological Bulletin of China, 31(1): 20-25.
	NIU Shao-wu, TIAN Shu-gang, PANG Qi-qing. 2010: Conchostracan biostratigraphy of the Dadianzi Formation in the Luanping basin, northern Hebei, China and the boundary of continental Jurassic and Cretaceous strata. Geological Bulletin of China, 29(7): 961-979.
	GAO Hong, TAN Qiang, WANG Hui, et al.. 2010: Discovery of equivalent stratum to Dadianzi Formation of northern Hebei in the Jinpen area, Inner Mongolia, China.. Geological Bulletin of China, 29(5): 723-728.
	NIU Shao-wu, TIAN Shu-gang. 2008: Discovery of conchostracans occurring in the Yixian Formation of western Liaoning in the Xiguayuan Formation of the Luanping basin, northern Hebei, China, and its significance. Geological Bulletin of China, 27(6): 753-768.
	NIU Shao-wu. 2008: Conchostracan biostratigraphy of the Dabeigou Formation in the Luanping basin, northern Hebei, China and establishment of a Dabeigou-aged stratotype section. Geological Bulletin of China, 27(3): 326-344.
	PANG Qi-qing, TIAN Shu-gang, LI Pei-xian, NIU Shao-wu, LIU Yong-qing. 2006: Ostracod biostratigraphy of the Dabeigou and Dadianzi formations and Jurassic-Cretaceous boundary in the Luanping basin, northern Hebei, China. Geological Bulletin of China, 25(3): 348-356.
	LI Peixian, LIU Yongqing, TIAN Shugang. 2004: Advances in the study of the Jurassic-Cretaceous lithostratigraphy in the Luanping basin,northern Hebei. Geological Bulletin of China, 23(8): 757-765.
	PANG Qiqing, LI Peixian, TIAN Shugang, LIU Yongqing. 2002: Discovery of ostracods in the Dabeigou and Dadianzi Formations at Zhangjiagou, Luanping County, northern Hebei Province of China and new progress in the biostratigraphic boundary study. Geological Bulletin of China, 21(6): 329-338.
	NIU Shaowu, LI Peixian, TIAN Shugang, LIU Yongqing. 2002: New progress in the study of conchostracon fossils from the Dabeigou Formation in the Luanping basin, northern Hebei Province of China. Geological Bulletin of China, 21(6): 322-328.

Discovery of conchostracan genus Clithrograpta and its significance in the Dadianzi Formation,Luanping basin,northern Hebei

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Discovery of conchostracan genus Clithrograpta and its significance in the Dadianzi Formation,Luanping basin,northern Hebei

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