Trilobites from the Cambrian Upper Changhia Formation in Northern Anhui

doi:10.19657/j.geoscience.1000-8527.2021.146

Abstract

Abstract:

This study is the first comprehensive description of the trilobites from the upper part of the Changhia Formation (Cambrian, Miaolingian, Guzhangian) at Fenghuangshan in Xiaoxian (Anhui Province). The samples include 15 genera, 12 species, and 4 indet. species, of which 4 genera, 3 species and 1 indet. species belong to Agnostida, 2 genera and 2 species belong to Ptychopariida, 9 genera, and 7 species and 3 indet. species belong to Lichida. The separated cranidia, pygidia and librigena are well preserved in the limestone. The upper Changhia Formation in northern Anhui is equivalent to the Kushan Formation of Shandong Province, with several same trilobite species. Comparing with Shandong and other regions, the dominant trilobites of the Changhia Formation of the studied area are Pseudoblackwelderia lubrica and Wongia triangulata. The review of the genus Pseudoblackwelderia is also revised.

Key words: trilobite, Changhia Formation, Guzhangian, Cambrian, northern Anhui

CLC Number:

Q915.819.1

LEI Qianping. Trilobites from the Cambrian Upper Changhia Formation in Northern Anhui[J]. Geoscience, 2023, 37(02): 500-511.

Figures/Tables 4

References 52

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