First Findings of Otoceras (Ceratitida) in the Kobyuma Zone of the Southern Verkhoyansk Region, Northeastern Russia

Кутыгин, Р. В.; Будников, И. В.; Бяков, А. С.; Davydov, Vladimir I.; Kilyasov, Afanasiy; Silantiev, Vladimir V.

doi:10.26907/2542-064x.2019.4.550-570

Cited by 10 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Griesbachian (Gangetian)' in the Geologic Time Scale 2012, while subsequently Ogg et al (2016) and Gradstein et al (2020, fig. 25.7) and many other authors (e.g., Wignall & Twitchett, 2002;Jiang et al, 2007;Algeo et al, 2008Algeo et al, , 2013Algeo & Twitchett, 2010;Wignall et al, 2010;Hounslow & Muttoni, 2010;Orchard, 2010;Nielsen et al, 2010;Joachimski et al, 2012Joachimski et al, , 2019Schoefer et al, 2013;Burgess et al, 2014;Shen et al, 2015Shen et al, , 2021Lehrmann et al, 2015a-b;Brosse et al, 2015Brosse et al, , 2017Li F et al, 2013Li F et al, , 2015Li F et al, , 2017Li F et al, , 2019Liang et al, 2016;Wu S et al, 2017;Brayard et al, 2017;Bai et al, 2017Bai et al, , 2021Huang, 2018;Li M et al, 2018a;Zhang F et al, 2018;Zhang L J et al, 2018;Foster et al, 2019;Zhang L et al, 2019a-b;Wu K et al, 2019;Wu H-T et al, 2019;Kutygin et al, 2019;Biswas et al, 2020;Brian et al, 2020;…”

Section: The Gssp Candidates For the Base Of The Anisian Having The Conodont Chiosella Timorensis As A Defunct Primary Biotic Proxymentioning

confidence: 94%

Untitled

2021

Actapalrom

View full text Add to dashboard Cite

The conodont Chiosella timorensis (Nogami, 1968) has for a long time been considered to be a suitable biotic proxy for the Olenekian-Anisian/Early-Middle Triassic boundary. The recently acquired ammonoid record around that boundary clearly shows that the FAD of this conodont is located well below the boundary, i.e., in the late Spathian. In the present paper, it is underlined that the conodont Chiosella timorensis was promoted as a proxy for the nominated boundary in the early 1980s when the ammonoid record around the boundary was not yet well established. On the other side, until the mid 1990s the taxonomic definition and the lineage of the conodont Chiosella timorensis were not well stated, and even now there are still controversial interpretations of the taxonomic content of this conodont species. The new data achieved from the ammonoid/conodont record around the nominated boundary, especially in the western USA, and also in the Deşli Caira section in Romania, firmly demonstrate that the conodont Chiosella timorensis is a defunct proxy for the Olenekian-Anisian/Early-Middle Triassic boundary. As a consequence, the present data on the ammonoid-documented Olenekian-Anisian/Early-Middle Triassic boundary requires the recalibration of all physical events that have been tied to the FAD of the conodont Chiosella timorensis. The case of the Albanian Kçira-section, for which the chronostratigraphic interpretation of the ammonoid record is proved incorrect, definitely makes the conodont Chiosella timorensis a defunct proxy for the nominated boundary. Also, the case of the two Chinese sections recently proposed as being "exceptional" GSSP candidates for the Early-Middle Triassic boundary, which is based on an inconsistent ammonoid/conodont biochronology, fully strengthens this conclusion. The history of the controversial usage of the conodont species Chiosella timorensis in defining the Olenekian-Anisian boundary justifies a discussion about the usefulness of conodonts in the chronostratigraphic calibration of the standard Triassic timescale. One may conclude that the conodonts are not qualified, and have not a reasonable potential, to be used to define or to redefine the boundaries of chronostratigraphic units in the standard Triassic timescale, which have been basically defined on ammonoid biochronology.

show abstract

Section: The Gssp Candidates For the Base Of The Anisian Having The Conodont Chiosella Timorensis As A Defunct Primary Biotic Proxymentioning

confidence: 94%

Untitled

2021

Actapalrom

View full text Add to dashboard Cite

show abstract

“…kashirtzevi, Sphaerestheria aldanensis, Lioestheria ignatjevi, Wetlugites pronus and Euestheria gutta in successive order were identified (Fig. 2, Table 1) (Kutygin et al 2019;Zharinova et al 2020). The lower Nekuchan Fm with Otoceras aff.…”

Section: Biostratigraphy and Age Controlmentioning

confidence: 95%

“…The Privolnyi Fm has a sharp contact, but depositional continuity with the overlying Nekuchan Fm. The Nekuchan Fm is comprised of well laminated siltstone with numerous cherty carbonate ellipsoidal concretions and rare beds of fine-to medium-grained sandstone of 0.5-3 m thick (Kutygin et al 2019).…”

Section: Lithostratigraphymentioning

confidence: 99%

Possible bipolar global expression of the P3 and P4 glacial events of eastern Australia in the Northern Hemisphere: Marine diamictites and glendonites from the middle to upper Permian in southern Verkhoyanie, Siberia

Davydov

Будников

Кутыгин

et al. 2022

Geology

View full text Add to dashboard Cite

Three intervals of glaciomarine diamictites with extensive glendonites in middle to upper Permian sediments were found in the Kobyume River, southern Verkhoyanie, Russia. The successions are biostratigraphically constrained as middle to upper Permian. The middle Permian diamictite horizons extend over a large area with a lateral distance of >1000 km. The upper Permian diamictites developed only locally. The diamictites are interpreted as glaciomarine sediments containing ice-rafted debris. Two glacial episodes in Siberia temporally correspond to the P3 (middle Permian) and P4 (late Permian) glacial events of eastern Australia, strongly suggesting a global bipolar climate and well-developed climatic belts during the middle to late Permian.

show abstract

“…These stratigraphic successions also contain the Lower Delenzhian ammonoids (Sverdrupites, Daubichites, etc. ), a reliable marker of the Roadian Stage [44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Radioisotopic U-pb Dating of the Kolchugino Group Basement (Kuznetsk Coal Basin, Siberia): Was the Change of Early-Middle Permian Floras Simultaneous at Different Latitudes in Angaraland?

Silantiev,

Gutak,

Tichomirowa

et al. 2023

Preprint

View full text Add to dashboard Cite

The Kuznetsk Basin (Kuzbass) is one of the largest coal basins in Siberia and a reference area for the ancient Angaraland continent. The proximity of the Kuzbass and Siberian platform caused their biotic similarities in the Late Palaeozoic. However, due to biota endemism, the Kuzbass Upper Palaeozoic does not correlate directly with the International Chronostratigraphic Chart (ICC). This paper discusses radioisotopic (CA-ID-TIMS) dating of zircons from a volcanic tuff located in the Starokuznetsk Formation. This level matches the interval of the Balakhonka/Kolchugino (B/K) floral change in Kuzbass, i.e. the gradual replacement of cordaitoid-dominated wet forests (Balakhonka flora) by more arid fern-pteridosperm-cordaitoid assemblages (Kolchugino flora). New age (276.9 ± 0.4 Ma) directly correlates the Starokuznetsk Fm with the Upper Kungurian of the ICS. We compared the Kuzbass data with data of the Western Verkhoyanie, where Middle Permian ammonoids (Sverdrupites assemblage) occur in strata recording the B/K floral change. Available (ICC) and new datings indicate the lag between the B/K floral change in low (Kuzbass) and high (Verkhoyanie) latitudes of Angaraland. The B/K floral change in the Kuzbass began in the early Late Kungurian and was completed by the end of this age. In contrast, the B/K floral change in Verkhoyanie began at the end of the Late Kungurian and was completed in the Late Wordian. The delay in the floral changes at different latitudes of Angaraland suggests that existing interregional correlations need further improvement.

show abstract

First Findings of Otoceras (Ceratitida) in the Kobyuma Zone of the Southern Verkhoyansk Region, Northeastern Russia

Cited by 10 publications

References 18 publications

Untitled

Untitled

Possible bipolar global expression of the P3 and P4 glacial events of eastern Australia in the Northern Hemisphere: Marine diamictites and glendonites from the middle to upper Permian in southern Verkhoyanie, Siberia

Radioisotopic U-pb Dating of the Kolchugino Group Basement (Kuznetsk Coal Basin, Siberia): Was the Change of Early-Middle Permian Floras Simultaneous at Different Latitudes in Angaraland?

Contact Info

Product

Resources

About