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Wan, Junyu等,PALEOBIOLOGY,2021

发表时间:2021-11-25编辑:王德珲点击:

Decoupling of morphological disparity and taxonomic diversity during the end-Permian mass extinction

作者

Wan, JY (Wan, Junyu)   Foster, WJ (Foster, William J.)   Tian, L (Tian, Li)   Stubbs, TL (Stubbs, Thomas L.)   Benton, MJ (Benton, Michael J.)   Qiu, XC (Qiu, Xincheng)   Yuan, AH (Yuan, Aihua)  

(由 Clarivate 提供)

 

 

47  

3  

402-417  

文献号

PII S0094837320000573

DOI

10.1017/pab.2020.57

出版时间

AUG 2021

文献类型

Article

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摘要

An increasing number of unexpectedly diverse benthic communities are being reported from microbially precipitated carbonate facies in shallow-marine platform settings after the end-Permian mass extinction. Ostracoda, which was one of the most diverse and abundant metazoan groups during this interval, recorded its greatest diversity and abundance associated with these facies. Previous studies, however, focused mainly on taxonomic diversity and, therefore, left room for discussion of paleoecological significance. Here, we apply a morphometric method (semilandmarks) to investigate morphological variance through time to better understand the ecological consequences of the end-Permian mass extinction and to examine the hypothesis that microbial mats played a key role in ostracod survival. Our results show that taxonomic diversity and morphological disparity were decoupled during the end-Permian extinction and that morphological disparity declined rapidly at the onset of the end-Permian extinction, even though the high diversity of ostracods initially survived in some places. The decoupled changes in taxonomic diversity and morphological disparity suggest that the latter is a more robust proxy for understanding the ecological impact of the extinction event, and the low morphological disparity of ostracod faunas is a consequence of sustained environmental stress or a delayed post-Permian radiation. Furthermore, the similar morphological disparity of ostracods between microbialite and non-microbialite facies indicates that microbial mats most likely represent a taphonomic window rather than a biological refuge during the end-Permian extinction interval.

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作者信息

通讯作者地址

Wan, Junyu    

(通讯作者)

China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China    

 

 

类别/分类

研究方向

Biodiversity & Conservation   Environmental Sciences & Ecology   Evolutionary Biology   Paleontology

基金资助