An ontogenetic study of <i>Eospirigerina putilla</i> (Brachiopoda) surviving the Late Ordovician mass extinction

doi:10.1016/j.palwor.2022.06.001

NIGPAS OpenIR

	*An ontogenetic study of Eospirigerina putilla* (Brachiopoda) surviving the Late Ordovician mass extinction**
通讯作者	Huang, Bing([email protected])
	Wang, Qian 1,2,3; Huang, Bing1,2
	2024-10-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	33 期号:5 页码:1378-1387
摘要	The ontogeny of the brachiopod can be reflected by the shell outline, size, and their interconnections. As a representative early atrypid brachiopod group of the Edgewood-Cathay Fauna, the genus Eospirigerina survived the Late Ordovician mass extinction (LOME). Abundant E. putilla specimens were collected from the "Wulipo Bed" limestone (upper Hirnantian, Ordovician). As a typical Eospirigerina dominated Edgewood-Cathay Fauna from the upper Hirnantian (Ordovician) of northeastern Yunnan, China, the quantitative ontogenetic study of E. putilla can provide a better understanding of its palaeoecology. Using the image contour recognition, we develop an automated measuring tool, test its robustness, and measure 554 complete and silicified specimens of E. putilla. An abnormal palaeoenvironment that the E. putilla population inhabited in is suggested by the high mortality of small individuals indicated by the size-frequency histogram and survivorship curve. Using quadratic polynomial regression, the negative allometric pattern of the shell length to width in the population is recognized. Using geometric morphometrics with semi-landmarks for 51 specimens from the population, the ontogenic trends are mapped by PCA with thin-plate splines, in which the heterochronic shifts may occur from an elongate shell with relatively larger ventral cardinal area and delthyrium to wider outline and smaller beak. Such heterochronic development is possibly caused by the unstable and stressful environment immediately after the LOME. (c) 2023 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
关键词	ontogeny geometric morphometrics brachiopod mass extinction computer vision
DOI	10.1016/j.palwor.2022.06.001
收录类别	SCI
语种	英语
关键词[WOS]	GEOMETRIC MORPHOMETRICS ; R-SELECTION ; ALLOMETRY ; HETEROCHRONY ; SIZE
资助项目	Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB26000000]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001318339400001
项目资助者	Strategic Priority Research Program (B) of Chinese Academy of Sciences
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44334
专题	中国科学院南京地质古生物研究所
通讯作者	Huang, Bing
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Wang, Qian,Huang, Bing. An ontogenetic study of Eospirigerina putilla (Brachiopoda) surviving the Late Ordovician mass extinction[J]. PALAEOWORLD,2024,33(5):1378-1387.
APA	Wang, Qian,&Huang, Bing.(2024).An ontogenetic study of Eospirigerina putilla (Brachiopoda) surviving the Late Ordovician mass extinction.PALAEOWORLD,33(5),1378-1387.
MLA	Wang, Qian,et al."An ontogenetic study of Eospirigerina putilla (Brachiopoda) surviving the Late Ordovician mass extinction".PALAEOWORLD 33.5(2024):1378-1387.