Sponge-dominated offshore benthic ecosystems across South China in the aftermath of the end-Ordovician mass extinction

Botting, Joseph P.; Muir, Lucy A.; Wang, Wenhui; Qie, Wenkun; Tan, Jingqiang; Zhang, Linna; Zhang, Yuandong

doi:10.1016/j.gr.2018.04.014

Cited by 32 publications

(14 citation statements)

References 80 publications

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“…A, B; co‐ordinates N.29.04343°, E.110.22702°). This section has a total thickness of 9.42 m and yielded latest Ordovician and early Silurian sponge remains, as reported by Botting et al (). The Upper Ordovician (Katian and Hirnantian) Wufeng Formation, which is around 2 m thick, is exposed in a small, disused stone quarry northeast of Yongshun, Hunan Province (Fig.…”

Section: Geological Setting Materials and Methodsmentioning

confidence: 78%

“…C, D). Diverse, well‐preserved graptolites are found throughout the section, providing precise age constraints (Botting et al , fig. 5), including Appendispinograptus leptothecalis (Mu & Ge in Fu, ), Styracograptus chiai (Mu, ), Anticostia lata (Elles & Wood, ), Rectograptus uniformis (Mu et Lee in Wang et al, ), Rectograptus socialis (Elles & Wood, ), Pararetiograptus sinensis Mu in Nanjing Institute of Geology and Palaeontology, , Dicellograptus ornatus Elles & Wood, , and Dicellograptus complexus Davies, .…”

Section: Geological Setting Materials and Methodsmentioning

confidence: 99%

“…E, lithological log of the Daheba section (Hunan) showing the occurrence of pyritic graptolites. Modified after Botting et al (, fig. 5).…”

Section: Geological Setting Materials and Methodsmentioning

confidence: 99%

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Internal supporting structures of some Late Ordovician graptolites from South China revealed by micro-CT

Wang

Muir

Zhang

et al. 2020

LET

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Three‐dimensionally preserved pyritic internal moulds of the Late Ordovician graptolites Appendispinograptus leptothecalis and Styracograptus chiai from the Upper Ordovician Wufeng Formation of the Daheba section, Hunan Province, South China, were imaged by micro‐CT. The distinctive pea‐shaped pits/dimples aligned in a zigzag line arising from the second/third thecal pair on the tubarium in these species are interpreted as the surface expression of the junction between the lateral thecal walls and the thickened internal cross‐bars that support the nema. The relations between different internal structures such as the nema, median septum, aboral lists, interthecal septa and cross‐bars are summarized, and examples of these supporting systems in different taxa are illustrated. The presence of isolated cross‐bars in different diplograptid tubarium may suggest that they have evolved as a result of constructional restrictions.

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Section: Geological Setting Materials and Methodsmentioning

confidence: 78%

Section: Geological Setting Materials and Methodsmentioning

confidence: 99%

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Internal supporting structures of some Late Ordovician graptolites from South China revealed by micro-CT

Wang

Muir

Zhang

et al. 2020

LET

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“…South China was located at or near the equator during the Late Ordovician (Cocks and Torsvik, 2013; Zhan et al, 2015). During the latest Hirnantian, the study area was located in a deep-water basinal area between the Cathaysian landmass to the present-day south and graptolitic shales deposited in relatively shallower water to the present-day north (Botting et al, 2018b). The shallower-water Yangtze platform was located to the present-day west (Botting et al, 2018b).…”

Section: Geological Settingmentioning

confidence: 99%

“…The shallower-water Yangtze platform was located to the present-day west (Botting et al, 2018b). The main sediment input to the area was from the Cathaysian landmass (Botting et al, 2018b). The graptolite- and sponge-bearing mudstone interval within the sandstones of the Wenchang Formation represents an interval of sea-level rise (Botting et al, 2017a).…”

Section: Geological Settingmentioning

confidence: 99%

Avitograptus species (Graptolithina) from the Hirnantian (uppermost Ordovician) Anji Biota of South China and the evolution of Akidograptus and Parakidograptus

et al. 2020

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The latest Ordovician to earliest Silurian graptolite Avitograptus avitus is important in the biostratigraphy of the Ordovician–Silurian boundary interval. Two additional species of Avitograptus are described from the sponge-dominated Anji Biota of the Upper Ordovician Wenchang Formation (Metabolograptus persculptus Biozone) of Zhejiang Province, South China. One species, Avitograptus akidomorphus new species, is new; the other, Avitograptus acanthocystus new combination, which was previously placed in Climacograptus, is herein assigned to Avitograptus. The former species may represent the ancestral akidograptid because it is identical in thecal form to Akidograptus, but differs in the development of the proximal end. The evolutionary changes from Avitograptus avitus to Akidograptus and Parakidograptus involved distal movement of the origins of th11 and th12, thecal elongation, and greater outward inclination of the thecal walls. UUID: http://zoobank.org/81c433a0-9069-48d2-ae72-1267400cbf77.

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Quartz crystallinity index: New quantitative evidence for biogenic silica of the Late Ordovician to Early Silurian organic-rich shale in the Sichuan Basin and adjacent areas, China

Liu

Zhai

Yang

et al. 2021

Sci. China Earth Sci.

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Sponge-dominated offshore benthic ecosystems across South China in the aftermath of the end-Ordovician mass extinction

Cited by 32 publications

References 80 publications

Internal supporting structures of some Late Ordovician graptolites from South China revealed by micro-CT

Internal supporting structures of some Late Ordovician graptolites from South China revealed by micro-CT

Avitograptus species (Graptolithina) from the Hirnantian (uppermost Ordovician) Anji Biota of South China and the evolution of Akidograptus and Parakidograptus

Quartz crystallinity index: New quantitative evidence for biogenic silica of the Late Ordovician to Early Silurian organic-rich shale in the Sichuan Basin and adjacent areas, China

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