New progress in the study of conchostracon fossils from the Dabeigou Formation in the Luanping basin, northern Hebei Province of China

NIU Shaowu; LI Peixian; TIAN Shugang; LIU Yongqing

Geological Bulletin of China > 2002 > 21(6): 322-328.

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.

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New progress in the study of conchostracon fossils from the Dabeigou Formation in the Luanping basin, northern Hebei Province of China

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Revised Date: March 17, 2002

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Abundant conchostracon fossils were discovered in the Dabeigou Formation at the Zhangjiagou section,Huodoushan Village,Luanping County,Hebei Province.They include4genera and22species.Among these,the species of Nestoria predominate and occur throughout the Dabeigou Formation,so they can be called the Nestoria fauna.In the Dabeigou Formation the authors for the first time found Jibeilim-nadia and Keratestheria,which occur in the lower and upper parts of the formation respectively.The two genera divide the Nestoria fauna into two assemblage zones:the Nestoria-Jibeilimnadia assemblage zone in the lower part and the Nestoria-Keratestheria assemblage zone in the upper part.In addition,the genus cf.Pseudograpta,an important element in the Middle Jurassic Tuchengzi Formation,was for the first time found in the upper part of the Dabeigou Formation at the Zhangjiagou section,which further proves that the conchostracon fauna in the Dabeigou Formation is closely related to that in the Tuchengzi Formation and has great age significance.
- Luanping basin,
- Dabeigou Formation,
- conchostracon fossil,
- new progress

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New progress in the study of conchostracon fossils from the Dabeigou Formation in the Luanping basin, northern Hebei Province of China

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