Three species of Pagodia (Corynexochida, Trilobita) from the Furongian (Cambrian) of northern Anhui, China and their intraspecific variation

doi:org/10.1016/j.palwor.2022.07.002

NIGPAS OpenIR

	Three species of Pagodia (Corynexochida, Trilobita) from the Furongian (Cambrian) of northern Anhui, China and their intraspecific variation
	Qian-Ping Lei 1; Qing Liu 2; Shan-Chi Peng（彭善池）3
	2023
发表期刊	Palaeoworld
卷号	32 期号:1 页码:27-43
摘要	More than one thousand cranidia, librigenae, and pygidia of the trilobite Pagodia were collected from the Cambrian (upper Jiangshanian through Stage 10) at Fenghuangshan in northern Anhui, China. They were identified as Pagodia lotos Walcott, 1905, Pagodia depressa (Walcott, 1905), and Pagodia bia Walcott, 1905. Based on one rare nearly complete exoskeleton of P. depressa and comparisons among the three species of Pagodia, the redefinition for those species is attempted as follows. Pagodia lotos: Glabella rectangular, slightly convergent anteriorly; anterior border ridge-like, anterior border furrow deep; pygidium semicircular, axis tapered rearward, with 4 axial rings and a terminal piece. P. depressa: Cranidium subquadrate, highly convex; glabella cylindrical, convergent anteriorly; pygidium semicircular. P. bia: Glabella rectangular, constricted in the midlength; fixigena wide (tr.); anterior border very narrow (sag.) and ridge-like; pygidium semicircular with wide borders; pygidial axis ended closer to the pygidial border furrow. We also discuss their intraspecific variations, commonly seen on the exfoliated specimens: palpebral ridge evident or obliterated, the length (sag.) of anterior area variable, the decoration of exoskeleton surface (with granules variable in size, convex or pitted). 2022 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
关键词	Trilobite Pagodia Furongian Cambrian China intraspecific variation
DOI	org/10.1016/j.palwor.2022.07.002
语种	英语
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/41883
专题	中国科学院南京地质古生物研究所
通讯作者	Qian-Ping Lei
作者单位	1.Academic Department, Changzhou Museum, Changzhou 213022, China 2.Room 104, Unit A, Building Six, Fenghuanghu No. 1, Xinbei District, Changzhou 213125, China 3.State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
推荐引用方式 GB/T 7714	Qian-Ping Lei,Qing Liu,Shan-Chi Peng. Three species of Pagodia (Corynexochida, Trilobita) from the Furongian (Cambrian) of northern Anhui, China and their intraspecific variation[J]. Palaeoworld,2023,32(1):27-43.
APA	Qian-Ping Lei,Qing Liu,&Shan-Chi Peng.(2023).Three species of Pagodia (Corynexochida, Trilobita) from the Furongian (Cambrian) of northern Anhui, China and their intraspecific variation.Palaeoworld,32(1),27-43.
MLA	Qian-Ping Lei,et al."Three species of Pagodia (Corynexochida, Trilobita) from the Furongian (Cambrian) of northern Anhui, China and their intraspecific variation".Palaeoworld 32.1(2023):27-43.