New data on Upper Devonian stratigraphy of the northwestern Kuznetsk basin: Evidence from foraminifera and chondrichthyes

Тимохина, Ирина Геннадьевна; Rodina, O

doi:10.1134/s086959381505007x

Cited by 2 publications

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“…; Vachard ; Vachard et al . ; Timokhina & Rodina ). This was presumably associated with the stepwise disappearance of their biotope, the Upper Devonian stromatoporoid‐coral build‐ups (McGhee , ; Racki ), similarly to other organisms connected with reef environments such as atrypid and gypidulid (pentamerid) brachiopods or certain crinoids (see Racki et al .…”

Section: Discussionmentioning

confidence: 99%

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Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Dubicka

2018

LET

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This study evaluates the severity of the poorly known and mostly underestimated foraminiferal extinction during the Frasnian-Famennian biotic crisis and its evolutionary aftermath. During this global event, worldwide, truly plurilocular planispiral (Nanicellidae) and uniseriate, palmate (Semitextulariidae) foraminifera associated with metazoan reefs died out entirely. Highly advanced test morphology such as that of nanicellids did not reappear in the earth's history until the Late Triassic. Moreover, morphotype comparable to that of the Devonian bilaterally flattened and palmate semitextularids appeared again until the Middle Jurassic (Frondicularia, Lagenida). In terms of the degree of test septation and chamber arrangement as well as general test shape, these foraminifera were 'very far ahead of their time'. In consequence, foraminifera suffered a significant collapse during the F-F biodiversity crisis, leading to an amazingly long evolutionary time lag in the case of plurilocular foraminifera lasting at least 150 million years. □ biotic crisis, Devonian, extinction, foraminifera, Frasnian-Famennian.Zofia Dubicka ✉ [z.dubicka@uw.edu.pl],

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Section: Discussionmentioning

confidence: 99%

“…17 therein; see Fig. for other sources and lithostratigraphy) and Timokhina & Rodina (), respectively. Note the uncertain location of the middle‐upper Frasnian boundary in the nanicellid‐rich strata of the Holy Cross Mts.…”

Section: Examples Of Regional Nanicellid Distributionmentioning

confidence: 99%

Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Dubicka

2018

LET

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Bio-, Lithostratigraphic and Geochemical Markers of Global Events in the Upper Devonian of the South of Western Siberia and their Value for Inter-regional Correlations

Izokh,

Popov

et al. 2024

Russian Geology and Geophysics

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—Upper Devonian carbonate reef complexes have been studied on the territory of the Kolyvan-Tom’ Folded Area in sections in the right bank of Tom’ River. Facies analysis of the exposed part of the reef complex indicates the predominance of fore-reef and continental margin depositional environments of a tectonically active margin. The identified conodont associations are represented by cosmopolitan representatives of the genera Ancyrodella, Ancyrolepis, Icriodus, Mehlina, Palmatolepis, Polygnathus and “Polylophodonta” suggesting a correlation with the punctata–jamieae, rhenana–linguiformis, triangularis and Lower crepida conodont zones. The largest conodont diversity occurs at the triangularis/crepida boundary. Biofacies analysis of ostracod distribution has led to identification of characteristic associations and their restriction to certain parts of the palaeobasin. Substage boundaries yielded ostracods with both smooth and ornamented shells. In the lower part of the substages, smooth forms predominate, whereas the middle and upper parts of the substages are characterised by forms with tuberculate and reticulated surface. Hollinella valentinae Beds were traced in the Upper Frasnian Solomino Formation, and Acratia granuliformis Beds were traced in the Lower Famennian Kosoy Utyos and lower Mitikha members. Isotope geochemistry of the Upper Devonian sections of the south of Western Siberia reveals Frasnian global events – the Middlesex/punctata and the Upper Kellwasser, their stratigraphic position confirmed by palaeontological data, as well as by the globally expressed negative carbon isotope anomaly. These boundaries are marked by changes in depositional regime reflecting sea-level eustatic fluctuations, which are complemented with faunal changes.

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New data on Upper Devonian stratigraphy of the northwestern Kuznetsk basin: Evidence from foraminifera and chondrichthyes

Cited by 2 publications

References 3 publications

Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Extinction of nanicellid foraminifera during the Frasnian–Famennian biotic crisis: some far‐reaching evolutionary consequences

Bio-, Lithostratigraphic and Geochemical Markers of Global Events in the Upper Devonian of the South of Western Siberia and their Value for Inter-regional Correlations

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