Global brachiopod palaeobiogeographical evolution from Changhsingian (Late Permian) to Rhaetian (Late Triassic)

Ke, Yan, Shen, Shu-zhong, Shi, G. R., Fan, Jun-xuan, Zhang, Hua, Qiao, Li and Zeng, Yong 2016, Global brachiopod palaeobiogeographical evolution from Changhsingian (Late Permian) to Rhaetian (Late Triassic), Palaeogeography, palaeoclimatology, palaeoecology, vol. 448, pp. 4-25, doi: 10.1016/j.palaeo.2015.09.049.

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Title Global brachiopod palaeobiogeographical evolution from Changhsingian (Late Permian) to Rhaetian (Late Triassic)
Author(s) Ke, Yan
Shen, Shu-zhong
Shi, G. R.ORCID iD for Shi, G. R. orcid.org/0000-0002-5126-4036
Fan, Jun-xuan
Zhang, Hua
Qiao, Li
Zeng, Yong
Journal name Palaeogeography, palaeoclimatology, palaeoecology
Volume number 448
Start page 4
End page 25
Total pages 22
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-04-15
ISSN 0031-0182
Keyword(s) Palaeogeography
Brachiopods
Triassic
Permian
mass extinction
recovery
Summary Previous studies suggest that the end-Permian mass extinction caused a dramatic drop of marine biodiversity near the Permian-Triassic boundary. However, it is unclear how profoundly this severe extinction might have changed the global provincialism, and how global provincialism responded to the protracted process of this extinction and subsequent recovery through the Triassic. In this paper, we carried out quantitative time-series analyses of global brachiopod palaeobiogeography over a timespan of nine consecutive stages/substages from the latest Permian Changhsingian to the latest Triassic Rhaetian based on a global brachiopod database of 483 genera and 2459 species from 1425 localities. Our results suggest that the extinction resulted in a global 'biogeographical eclipse' in the ensuing Early Triassic Griesbachian and Dienerian times in that neither biogeographic realm nor province could be recognized. It was characterized by an extreme low-diversity, mostly dwarfed and nearly globally distributed brachiopod fauna, coupled with persistently high sea surface temperature and a flattened global latitudinal thermal gradient. Global provincialization emerged again during the Olenekian at province level and reached its peak stage during the Carnian when three realms and six provinces were clearly recognized. Global provincialism became weakened again in the latest Triassic Rhaetian, marked by three general realms, but no province distinguished. Our analyses suggest that both palaeolatitude-related thermal gradient and the presence of Pangea (a profound geographic barrier) were most effective in explaining the spatial patterns. In addition, oceanic currents along the northwestern coast of Pangea also played an important (albeit regional) role in linking southern North and Central America brachiopod faunas with those of the Boreal Realm. This study also revealed that the brachiopod biodiversity center moved northwards over the studied interval, accompanied and hence accountable for by the northward drift of a large number of tectonic blocks in the Palaeotethys and Neotethys during the Triassic.
Language eng
DOI 10.1016/j.palaeo.2015.09.049
Field of Research 040308 Palaeontology (incl Palynology)
0403 Geology
0602 Ecology
0603 Evolutionary Biology
060302 Biogeography and Phylogeography
Socio Economic Objective 970104 Expanding Knowledge in the Earth Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP150100690
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080102

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