安徽巢湖平顶山下三叠统牙形石生物地层序列

赵来时; 童金南; 左景勋

Volume 28 Issue 4

Jul. 2003

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ZHAO Lai-shi, TONG Jin-nan, ZUO Jing-xun, 2003. Lower Triassic Conodont Biostratigraphical Sequence at West Pingdingshan Section, Chaohu, Anhui Province, China. Earth Science, 28(4): 414-418.

Citation:

ZHAO Lai-shi, TONG Jin-nan, ZUO Jing-xun, 2003. Lower Triassic Conodont Biostratigraphical Sequence at West Pingdingshan Section, Chaohu, Anhui Province, China. Earth Science, 28(4): 414-418.

ZHAO Lai-shi, TONG Jin-nan, ZUO Jing-xun, 2003. Lower Triassic Conodont Biostratigraphical Sequence at West Pingdingshan Section, Chaohu, Anhui Province, China. Earth Science, 28(4): 414-418.

Citation:

ZHAO Lai-shi, TONG Jin-nan, ZUO Jing-xun, 2003. Lower Triassic Conodont Biostratigraphical Sequence at West Pingdingshan Section, Chaohu, Anhui Province, China. Earth Science, 28(4): 414-418.

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Lower Triassic Conodont Biostratigraphical Sequence at West Pingdingshan Section, Chaohu, Anhui Province, China

Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2003-02-25
Publish Date: 2003-07-25

Abstract

Abstract

The authors provide a brief introduction on the Lower Triassic conodont zonation at West Pingdingshan Section, Chaohu, Anhui Province, China. Rich conodont fossils have been extracted from 172 productive samples in 286 analyzed samples, from the Lower Triassic Yinkeng, Helongshan, and the lower part of Nanlinghu Formation exposed at the section of 112.8 m thick. The extracted 2 187 conodont elements include 51 stratigraphically significant species referable to 11 genera: Hindeodus, Isarcicella(?), Neogondolella, Neospathodus, Platyvillosus, Cratognathodus, Parachirognathus, Pachycladina, Ellisonia, Aduncodina and Cornudina. Nine conodont zones are recognized in ascending order as follows: (1)Hindeodus typicalis-Neogondolella planataZone; (2)Neogondolella krystyni Zone; (3)Neospathodus kummeli Zone; (4)Neospathodus dieneri Zone; (5)Neospathodusn. sp. C-Neospathodusn. sp. D Zone; (6)Neospathodus waageni Zone; (7)Neospathodusn. sp. M Zone; (8)Neospathodus eotriangularis Zone; (9)Neospathodus abruptus-Neospathodus homeri Zone. Zones (2), (3), (5), (7) and (8) are first established and also Neospathodus waageniis reported for the first time from the Yinkeng Formation. Associated with conodonts also occur macrofossils such as ammonoids and bivalves, which confirm the conodont biochronostratigraphy to a certain degree.
- conodont,
- conodont biostratigraphy,
- Lower Triassic,
- Chaohu, Anhui Province

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References(28)

References

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