Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China

Hu, Keyi; Qi, Yuping; Nemyrovska, Tamara I.

doi:10.1080/14772019.2018.1440255

Cited by 13 publications

(13 citation statements)

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“…Although there was rapid glacio‐eustatic fall across the MPB, the carbonate slopes in South China were not subaerially exposed and thus most likely recorded a near‐continuous MPB succession. Detailed conodont studies also reveal a complete evolutionary lineage in Naqing section, suggesting near‐continuous sedimentary records (Hu et al, ).…”

Section: Sedimentary Facies and Sea‐level Change Across The Mpbmentioning

confidence: 94%

“…The MPB boundary of the studied sections coincides with the base of the D . noduliferus s. l. Zone (Hu et al, ; Qi et al, ; Figure ).…”

Section: General Geologymentioning

confidence: 99%

“…Three conodont zones, the latest Mississippian Gnathodus postbilineatus Zone and the Pennsylvanian Declinognathodus noduliferus s. l. and Idiognathoides sinuatus zones, can be recognized in the MPB interval of the Naqing section (Figure ; Hu, Qi, & Nemyrovska, ; Wang & Qi, ; Wang et al, ). The G .…”

Section: General Geologymentioning

confidence: 99%

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Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

et al. 2019

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A positive carbonate δ13C excursion (by ~1.5–3.0‰) has been reported across the Mississippian–Pennsylvanian boundary (MPB) from Euramerican epicontinental seas, implying a coeval atmospheric pCO2 decrease and Gondwanan glaciation at that time. This excursion was mainly observed in carbonate platforms which experienced repeated subaerial exposure. The South China Block was located in the middle of the Paleo‐Tethys Ocean and the Panthalassic Ocean during the Carboniferous and contains well‐preserved carbonate slope strata across the MPB. Four lithofacies were defined in the studied Naqing, Narao, and Dianzishang sections, including thin‐bedded lime mudstones, laminated wackestones to packstones, normally‐graded packstones, and slumped limestones. Immediately above the MPB, a bed of normally‐graded packstones or slump masses occurs in the studied sections, which together with coeval subaerial‐exposure features in shallow‐water carbonate platform of South China, suggests a significant sea‐level fall across the MPB. Carbonate δ13C records show a consistent value of ~3.0‰ below the MPB in the Naqing and Narao sections, and both sections show an obvious rise in δ13C across the MPB (by ~0.5–1.0‰). The relatively small‐magnitude rise in δ13C would have resulted from well‐mixed seawater induced by intensified upwelling in the eastern Paleo‐Tethys Ocean during the glacial peak. Hence, the carbonate δ13C values recorded in the South China Block may represent a mean δ13C of the dissolved inorganic carbon in global ocean water at that time. Correlation between carbonate δ13C and previously published conodont δ18O and 87Sr/86Sr records suggests that the MPB glaciation was mainly driven by enhanced continental weathering, rather than increased organic carbon burial, although further quantitative simulation is required to better understand the interlinked processes during the Earth's penultimate icehouse.

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Section: Sedimentary Facies and Sea‐level Change Across The Mpbmentioning

confidence: 94%

“…The MPB boundary of the studied sections coincides with the base of the D . noduliferus s. l. Zone (Hu et al, ; Qi et al, ; Figure ).…”

Section: General Geologymentioning

confidence: 99%

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Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

et al. 2019

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“…These characters are indicative for the species Declinognathodus lateralis (Higgins & Bouckaert) described from the Namurian (Alportian and Kinderscoutian) in Belgium. The species is widely distributed in the lower and middle Bashkirian strata of Great Britain (Higgins, 1975), Donets Basin, Ukraine (Nemyrovska, 1999), South Urals, Russia (Kulagina et al, 2014;Nikolaeva et al, 2017), and South China (Hu et al, 2018). In South China, D. lateralis spans in the middle Bashkirian, with its first occurrence (FO) is in the lower part of the Idiognathoides sinuatus Zone, and its lower occurrence (LO) is in the middle part of the "Streptognathodus" expansus M1 Zone (Hu et al, 2019), but in the South Urals it first appears in the lowermost Bashkirian and its FO coincides with the base of the D. noduliferus Zone (Kulagina et al, 2014).…”

Section: Conodontsmentioning

confidence: 99%

Late Carboniferous biota from the Ljubija iron mine area, Bosnia and Herzegovina

Milošević¹,

Алексеев²,

Zaytseva³

et al. 2021

Geologija

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The Olistostrome member of the Sana-Una Paleozoic complex of the Ljubija ore mine in Bosnia and Herzegovina contains limestone fragments of pebble to block size that have been examined paleontologically. The recovered conodont fauna of the first sample is characterized by the species Declinognathodus lateralis, Idiognathoides sulcatus sulcatus and Idiognathodus sp. confirming its mid-Bashkirian age. This report is the first on the occurrence of these taxa in the area. The second sample with chaetetid demosponges yields an abundant diversified microbiota consisting of cyanobacteria, algae and foraminifera. Chlorophyts are marked by the common siphonoclad occurrence of Donezella lutugini and D. lunaensis, whereas rhodophyts include rare representatives of Stacheia, Stacheoides, Pseudoungdarella and Masloviporidium. The presence of Asphaltinella horowitzi and Aphralysia carbonaria of unclear taxonomic position is also documented. Pseudostaffellids, eostaffellids and other foraminifera, mostly endothyrids are present. The examined associations of fossils point to the Bashkirian age of the primary rock that originated in a very shallow habitat most probably linked to a high-energy reef environment.

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“…lateralis within the range of Idiognathodus and Diplognathodus are mostly ridged forms and are not older forms of early Bashkirian type (e.g. D. tuberculosus Hu et al ., 2019), but are closer to forms within the BMB interval, according to their long groove extending to the dorsal end of the platform and separating transverse ridges. Also, D. benderi sp.…”

Section: Resultsmentioning

confidence: 99%

Evolution of the conodont Diplognathodus ellesmerensis from D. benderi sp. nov. at the Bashkirian–Moscovian (lower–middle Pennsylvanian) boundary in South China

Hogancamp

Lambert

et al. 2020

Papers in Palaeontology

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Conodont assemblages from the Bashkirian-Moscovian boundary interval in the Naqing section, South China have been studied in detail. A landmark-based geometric morphometric analysis of the evolution of Diplognathodus ellesmerensis is presented. This analysis helps demonstrate that a distinct new species, D. benderi sp. nov., is the direct evolutionary ancestor of D. ellesmerensis. The potential of using the first appearance datum (FAD) of D. ellesmerensis as the Bashkirian-Moscovian boundary marker is re-evaluated via biostratigraphic correlations of conodonts and other fossil groups between different palaeogeographical basins. The FAD of D. ellesmerensis from within the D. benderi sp. nov.-D. ellesmerensis lineage is an excellent potential marker to recognize a global Bashkirian-Moscovian boundary because of its global distribution, the abundance of supplementary marker species at similar stratigraphical levels, and the close stratigraphic proximity of the FAD to the traditional Bashkirian-Moscovian boundary, thus largely preserving the original concept of the base of the Moscovian Stage.

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Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China

Cited by 13 publications

References 25 publications

Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

Late Carboniferous biota from the Ljubija iron mine area, Bosnia and Herzegovina

Evolution of the conodont Diplognathodus ellesmerensis from D. benderi sp. nov. at the Bashkirian–Moscovian (lower–middle Pennsylvanian) boundary in South China

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Mid-Carboniferous conodonts and their evolution: new evidence from Guizhou, South China

Cited by 13 publications

References 25 publications

Glacio‐eustasy and δ13C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

Glacio‐eustasy and δ13C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

Late Carboniferous biota from the Ljubija iron mine area, Bosnia and Herzegovina

Evolution of the conodont Diplognathodus ellesmerensis from D. benderi sp. nov. at the Bashkirian–Moscovian (lower–middle Pennsylvanian) boundary in South China

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Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation

Glacio‐eustasy and δ¹³C across the Mississippian–Pennsylvanian boundary in the eastern Paleo‐Tethys Ocean (South China): Implications for mid‐Carboniferous major glaciation