A new Dienerian (Early Triassic) brachiopod fauna from South China and implications for biotic recovery after the Permian-Triassic extinction

2017 ◽  
Vol 3 (3) ◽  
pp. 425-439 ◽  
Author(s):  
Fengyu Wang ◽  
Jing Chen ◽  
Xu Dai ◽  
Haijun Song
Keyword(s):  
South China ◽  
Early Triassic ◽  
Biotic Recovery ◽  
Brachiopod Fauna

Early and Middle Triassic trends in diversity, evenness, and size of foraminifers on a carbonate platform in south China: implications for tempo and mode of biotic recovery from the end-Permian mass extinction

Paleobiology ◽  
2011 ◽  
Vol 37 (3) ◽  
pp. 409-425 ◽  
Author(s):  
Jonathan L. Payne ◽  
Mindi Summers ◽  
Brianna L. Rego ◽  
Demir Altiner ◽  
Jiayong Wei ◽  
...  
Keyword(s):  
South China ◽  
Mass Extinction ◽  
Evolutionary Dynamics ◽  
Middle Triassic ◽  
Carbonate Platform ◽  
Early Triassic ◽  
Data Set ◽  
Recovery Pattern ◽  
Biotic Recovery ◽  
Permian Mass Extinction

Delayed biotic recovery from the end-Permian mass extinction has long been interpreted to result from environmental inhibition. Recently, evidence of more rapid recovery has begun to emerge, suggesting the role of environmental inhibition was previously overestimated. However, there have been few high-resolution taxonomic and ecological studies spanning the full Early and Middle Triassic recovery interval, leaving the precise pattern of recovery and underlying mechanisms poorly constrained. In this study, we document Early and Middle Triassic trends in taxonomic diversity, assemblage evenness, and size distribution of benthic foraminifers on an exceptionally exposed carbonate platform in south China. We observe gradual increases in all metrics through Early Triassic and earliest Middle Triassic time, with stable values reached early in the Anisian. There is little support in our data set for a substantial Early Triassic lag interval during the recovery of foraminifers or for a stepwise recovery pattern. The recovery pattern of foraminifers on the GBG corresponds well with available global data for this taxon and appears to parallel that of many benthic invertebrate clades. Early Triassic diversity increase in foraminifers was more gradual than in ammonoids and conodonts. However, foraminifers continued to increase in diversity, size, and evenness into Middle Triassic time, whereas diversity of ammonoids and conodonts declined. These contrasts suggest decoupling of recovery between benthic and pelagic environments; it is unclear whether these discrepancies reflect inherent contrasts in their evolutionary dynamics or the differential impact of Early Triassic ocean anoxia or associated environmental parameters on benthic ecosystems.

scholarly journals An Early Triassic sauropterygian and associated fauna from South China provide insights into Triassic ecosystem health

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Qiang Li ◽  
Jun Liu
Keyword(s):  
South China ◽  
Ecosystem Health ◽  
Middle Triassic ◽  
Carbonate Platform ◽  
Data Matrix ◽  
Early Triassic ◽  
Associated Fauna ◽  
Biotic Recovery ◽  
New Material ◽  
Prevailing View

AbstractThe timing and pattern of biotic recovery from the Permo-Triassic Mass Extinction remains elusive. Here we report new material of the Early Triassic sauropterygian Lariosaurus sanxiaensis and associated fauna from the Jialingjiang Formation in Hubei Province, South China. Phylogenetic analysis based on a novel data matrix of sauropterygians recognizes L. sanxiaensis as a basal nothosaur. Stratigraphic congruence analysis shows that the new phylogenetic consensus tree matches to the stratigraphic distribution of sauropterygians very well. The diversified reptilian fauna and inferred simple food web in the Nanzhang-Yuan’an fauna where L. sanxiaensis was discovered suggest that the Triassic biotic recovery adopted a top-down pattern, in contrast to the prevailing view. Comparison with the Middle Triassic Luoping biota from the same carbonate platform suggests that the Triassic biotic recovery is delayed and healthy ecosystems were not established until the Middle Triassic in South China.

Evolution of Early Triassic outer platform paleoenvironments in the Nanpanjiang Basin (South China) and their significance for the biotic recovery

2008 ◽  
Vol 204 (1-2) ◽  
pp. 36-60 ◽  
Author(s):  
Thomas Galfetti ◽  
Hugo Bucher ◽  
Rossana Martini ◽  
Peter A. Hochuli ◽  
Helmut Weissert ◽  
...  
Keyword(s):  
South China ◽  
Early Triassic ◽  
Biotic Recovery

Coral faunal turnover through the Ordovician–Silurian transition in South China and its global implications for carbonate stratigraphy and macroevolution

2016 ◽  
Vol 154 (4) ◽  
pp. 829-836 ◽  
Author(s):  
GUANGXU WANG ◽  
RENBIN ZHAN ◽  
BING HUANG ◽  
IAN G. PERCIVAL
Keyword(s):  
Shallow Water ◽  
South China ◽  
Tropical Regions ◽  
Faunal Turnover ◽  
New Correlation ◽  
Biotic Recovery ◽  
Coral Assemblage ◽  
Early Survival ◽  
Brachiopod Fauna ◽  
Late Survival

AbstractA complete coral succession through the Ordovician–Silurian transition in South China reveals an adaptive phase during the Hirnantian glaciation, followed by an early survival phase and finally a late survival phase that persisted into the early Silurian. We demonstrate that a coral assemblage of latest Hirnantian to earliest Silurian age, remarkably similar to those from the Edgewood fauna known from Laurentia, occurs stratigraphically above the typical Hirnantian fauna. This, in combination with other evidence (e.g. brachiopods, lithology and chemostratigraphy), suggests the Edgewood fauna probably post-dated the early–middle Hirnantian glaciation, rather than being coeval with the older glacial-relatedHirnantiafauna. Evidence from South China shows that the Edgewood fauna appeared in the very latest Hirnantian and extended into the middle Rhuddanian, considerably younger than previously believed. Such a new correlation necessitates a reassessment of the influence of the end-Ordovician glaciation on biotas. We argue that this major glaciation probably would have substantially affected the ecosystem even in tropical regions, as shown by the development there of theHirnantiafauna or, alternatively, the presence of a conspicuous stratigraphic hiatus. This suggests a surprisingly rapid biotic recovery during the subsequent postglacial transgression, represented by the flourishing of comparatively diverse shelly faunas (e.g. the Edgewood fauna and theCathaysiorthisbrachiopod fauna) in nearshore shallow water environments from Laurentia to eastern peri-Gondwana terranes or blocks (e.g. South China).

scholarly journals Early Triassic microbialites from the Changxing Region of Zhejiang Province, South China

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Ya-Fei Huang ◽  
David P. G. Bond ◽  
Yong-Biao Wang ◽  
Tan Wang ◽  
Zhi-Xing Yi ◽  
...  
Keyword(s):  
South China ◽  
Zhejiang Province ◽  
Early Triassic
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