Silurian integrative stratigraphy and timescale of China

Jiayu, Rong; Wang, Yi; Zhan, Renbin; Fan, Junxuan; Huang, Bing; Tang, Peng; Li, Yue; Zhang, Xiaole; Wu, Rongchang; Wang, Guangxu; Wei, Xin

doi:10.1007/s11430-017-9258-0

Cited by 56 publications

(56 citation statements)

References 82 publications

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“…Our samples from the Ymogantau Formation contain the conodont Ozarkodina guizhouensis together with the mongolepids Rongolepis cosmetica, Shiqianolepis hollandi and Chenolepis asketa. These also occur in the lower Member of Xiushan Formation and suggest that the upper part of the Ymogantau sequence is of middle Telychian age [5,42,43] (Fig 1).…”

Section: Ymogantau Formation (Sensu [9 31])mentioning

confidence: 93%

Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)

et al. 2020

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The Sinacanthida ordo nov. and Mongolepidida are spine-and scale-based taxa whose remains encompass some of the earliest reported fossils of chondrichthyan fish. Investigation of fragmentary material from the Early Silurian Tataertag and Ymogantau Formations of the Tarim Basin (Xinjiang Uygur Autonomous Region, China) has revealed a diverse mongolepidid and sinacanthid fauna dominated by mongolepids and sinacanthids in association with abundant dermoskeletal elements of the endemic 'armoured' agnathans known as galeaspids. Micro-computed tomography, scanning electron microscopy and histological sections were used to identify seven mongolepid genera (including Tielikewatielepis sinensis gen. et sp. nov., Xiaohaizilepis liui gen. et sp. nov. and Taklamakanolepis asiaticus gen. et sp. nov.) together with a new chondrichthyan (Yuanolepis bachunensis gen. et sp. nov.) with scale crowns consisting of a mongolepid-type atubular dentine (lamellin). Unlike the more elaborate crown architecture of mongolepids, Yuanolepis gen. nov. exhibits a single row of crown elements consistent with the condition reported in stem chondrichthyans from the Lower Devonian (e.g. in Seretolepis, Parexus). The results corroborate previous work by recognising lamellin as the main component of sinacanthid spines and point to corresponding developmental patterns shared across the dermal skeleton of taxa with lamellin and more derived chondrichthyans (e.g. Doliodus, Kathemacanthus, Seretolepis and Parexus). The Tarim mongolepid fauna is inclusive of coeval taxa from the South China Block and accounts for over two-thirds of the species currently attributed to Mongolepidida. This demonstrates considerable overlap between the Tarim and South China components of the Lower Silurian Zhangjiajie Vertebrate Fauna.

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Section: Ymogantau Formation (Sensu [9 31])mentioning

confidence: 93%

Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)

et al. 2020

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“…The Silurian strata in the northwestern Jiangxi province are subdivided into six formations: the Lishuwo, Dianbei, Qingshui, Xiajiaqiao, Xikeng, and Xiaoxi formations (Zhao et al, 2009;Zhao & Zhu, 2010;Wang et al, 2018;Rong et al, 2019). New sinogaleaspid material was collected from two fossil sites in the Xikeng formation at Taiyangsheng Town, Xiushui County, Jiangxi province near Xikeng village ( Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…The fish-bearing Xikeng formation is known as the Upper Red Beds (URBs) and is the equivalent of the Huixingshao formations in Chongqing and Guizhou, and the Maoshan formations in the Jiangsu and Zhejiang provinces. Although the precise age of the URBs in the western part of the Yangtze Platform is difficult to determine, it is thought to be from the middle-late Telychian period due to evidence from the underlying Xiushan formation with its invertebrate fauna and sequence stratigraphic analyses (Zhao et al, 2009;Zhao & Zhu, 2010;Wang et al, 2018;Rong et al, 2019). The age of the fish-bearing Xikeng formation is thought to be from the middle-late Telychian age of the Llandovery epoch during the Silurian period like those of the Huixingshao and Maoshan formations in South China (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

A new genus of sinogaleaspids (Galeaspida, stem-Gnathostomata) from the Silurian Period in Jiangxi, China

Shan

Zhu

Zhao

et al. 2020

PeerJ

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Galeaspids are an endemic clade of jawless stem-gnathostomes known as ostracoderms. Their existence illuminates how specific characteristics developed in jawed vertebrates. Sinogaleaspids are of particular interest among the galeaspids but their monophyly is controversial because little is known about Sinogaleaspis xikengensis. Newly discovered sinogaleaspids from the Lower Silurian of Jiangxi, China provide a wealth of data and diagnostic features used to establish the new genus, Rumporostralis gen. nov., for Sinogaleaspis xikengensis. A morphological study showed that the sensory canal system of sinogaleaspids had mosaic features similar to those of three known galeaspids. There are 3–8 pairs of transverse canals in the Sinogaleaspidae, which suggests that the sensory canal system of galeaspid probably had a grid distribution with transverse canals arranged throughout the cephalic division. Phylogenetic analysis of Galeaspida supports the monophyly of the Sinogaleaspidae, consisting of Sinogaleaspis, Rumporostralis, and Anjiaspis. However, Shuyu and Meishanaspis form another monophyletic group, Shuyuidae fam. nov., which is outside all other eugaleaspidiforms. We propose a cladistically-based classification of Galeaspida based on our analysis.

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“…The tectonic upheavals of the Late Ordovician impacted many basins globally. The Silurian brought fundamental changes, such as a global sea‐level change (Brand, Azmy, & Veizer, ; Djouder, Lüning, Da Silva, Abdallah, & Boulvain, ; Heron, Khoukhi, Paris, Ghienne, & Herissé, ), changes of the sedimentary system (Antoshkina, ; J. Rong et al, ; Yin, Dang, Zhang, Chen, & Mcrivette, ), and glacial events (Heron et al, ; Khader & Novakowski, ). This leads to a widespread biological extinction and catastrophic events in many basins of the world (Fan et al, ; Gelsthorpe, ; Luo et al, ; G. Wang, Zhan, & Percival, ).…”

Section: Introductionmentioning

confidence: 99%

“…, changes of the sedimentary system (Antoshkina, 2010; J. Rong et al, 2019;Yin, Dang, Zhang, Chen, & Mcrivette, 2008), and glacial events (Heron et al, 2008;Khader & Novakowski, 2014). This leads to a widespread biological extinction and catastrophic events in many basins of the world (Fan et al, 2013;Gelsthorpe, 2004;Luo et al, 2016;G.…”

mentioning

confidence: 99%

The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

Liu

Lin

et al. 2019

Geological Journal

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The Silurian red beds of the Tarim Basin were formed in a coastal tidal and fluvial delta environment. They consist of red mudstone layers of the lower Tataaiertag Formation and separate the grey-green muddy sandstones of the Kalpintag Formation from the red sandstones of the upper Tataaiertag Formation. These mudstones are regarded as the most important regional seal for Silurian oil reservoirs. They contain a significant record of palaeoenvironmental and palaeoclimate changes which is related to global sea-level changes. Based on a systematic and continuous sedimentary study and multiple geochemistry analyses of samples taken from the Sishichang outcrop profile in west of the Tarim Basin, the Early-Middle Silurian palaeoclimate and sea-level curve have been reconstructed. The Early-Middle Silurian Tarim Basin encountered five intervals of climate change, from humid transitioning to semi-humid and dry-hot climate which shows signs of generally increasing oxidation. The reconstructed sea-level curve indicates five sea-level cycles throughout the Early-Middle Silurian succession. The most significant sea-level drop occurred during the early Telychian stage, which represents the onset of the red mudstone section of the Tataaiertag Formation. This new sealevel curve shows some differences compared with the earlier proposed global sealevel curves. The dry-hot climate occurred during the late Telychian stage and the beginning of Wenlock age. The Early-Middle Silurian sea-level change of the TarimBasin was mostly synchronical to the eustacy. However, regional tectonic activities during the early Telychian stage further enhanced the effect of the global sea-level fall and lead to a dry-hot climate trend which also caused the creation of the red beds of the Silurian period.

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Silurian integrative stratigraphy and timescale of China

Cited by 56 publications

References 82 publications

Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)

Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)

A new genus of sinogaleaspids (Galeaspida, stem-Gnathostomata) from the Silurian Period in Jiangxi, China

The Silurian red beds of Tarim Basin: Signals of palaeoenvironment, palaeoclimate, and sea‐level change

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