Terreneuvian stratigraphy and faunas from the Anabar Uplift, Siberia.

Kouchinsky, Artem; Bengtson, Stefan; Landing, Ed; Steiner, Michael; Vendrasco, Michael J.; Ziegler, K.

doi:10.4202/app.00289.2016

Cited by 75 publications

(86 citation statements)

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“…; Kouchinsky et al . ) and our results, this model generally follows the one proposed by Kouchinsky et al . () and primarily stands on chemostratigraphical data.…”

Section: Discussionsupporting

confidence: 92%

“…Such plastic deformation has been documented elsewhere in Blastulospongia (Conway Morris & Chen ; Kouchinsky et al . ). It suggests the organism was covered by flexible, semi‐rigid exoskeleton rather than a completely mineralized one.…”

Section: Resultsmentioning

confidence: 97%

“…A dashed fragment of the carbon‐isotope curve in the Kyndyn Formation of the western Anabar Uplift (4) is based on correlation with the Kugda‐Yuryakh section in Kouchinsky et al . (). GSSR—General Stratigraphic Scale of Russia; ICC—International Chronostratigraphic Chart; Atd.—Atdabanian Stage; A. trisulc .— Anabarites trisulcatus Assemblage Zone; P. a .— Purella antiqua Assemblage Zone; N. s .— Nochoroicyathus sunnaginicus Assemblage Zone; T—base of the Tommotian Stage, defined by the first occurrence of Aldanella attleborensis .…”

Section: Discussionmentioning

confidence: 97%

“…; Khomentovsky & Karlova ; Parkhaev & Karlova ; Kouchinsky et al . ). However, the complicated facies structure of the Siberian Platform in the late Ediacaran and early Cambrian hinders precise intraregional and interregional correlation, as well as localization of the main bio‐(Peng et al .…”

mentioning

confidence: 97%

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Resolving Terreneuvian stratigraphy in subtidal–intertidal carbonates: palaeontological and chemostratigraphical evidence from the Turukhansk Uplift, Siberian Platform

Marusin

Кочнев

Karlova

et al. 2019

LET

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Both diverse assemblages of small skeletal fossils and a representative chemostratigraphical record make the Siberian Platform widely regarded as one of the key regions for the reconstruction of global biotic and abiotic events in the late Ediacaran and early Cambrian. However, the wide distribution of intertidal–subtidal facies in the Ediacaran–Cambrian transitional strata of the central and southwestern Siberian Platform (Turukhansk–Irkutsk–Olekma facies region) produces a dramatic depletion of the palaeontological record and considerably limits their age‐calibration and long‐distance correlation. We report new lithological, palaeontological and carbonate carbon‐isotope data for the Ediacaran–Cambrian sections of the Turukhansk Uplift (northwestern Siberian Platform, western facies region). These data provide a robust framework for the chemostratigraphical correlation of the western facies region with sections of the transitional and eastern regions of the Siberian Platform and further confirms a depositional hiatus at the base of the Tommotian Stage in the stratotype section (Aldan River, SE Siberia). The carbon‐isotope curve from the Turukhansk Uplift sections correlates positively with the most chemostratigraphically representative Ediacaran–Cambrian sections (Siberia, Morocco, South China). It records major carbon‐isotope oscillations globally recognized in the lower Cambrian, enabling localization of the Fortunian and Cambrian Stage 2 boundaries in the Platonovskaya Formation. Although there is extreme paucity and poor preservation of the small skeletal fossils in the western facies region, we report individual Barskovia, Blastulospongia and chancelloriid sclerites from the Platonovskaya Formation. A combination of palaeontological and chemostratigraphical data suggests the base of P. antiqua Assemblage Zone is located in the middle Platonovskaya Formation. The earliest spiral gastropods probably occurred at ~541 Ma, as demonstrated by the discovery of a specimen of Barskovia near the base of the large negative excursion in the lower Platonovskaya Formation, correlated with the BACE negative carbon‐isotope peak in the sections of the Yangtze Platform.

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“…; Kouchinsky et al . ) and our results, this model generally follows the one proposed by Kouchinsky et al . () and primarily stands on chemostratigraphical data.…”

Section: Discussionsupporting

confidence: 92%

Section: Resultsmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 97%

See 2 more Smart Citations

Resolving Terreneuvian stratigraphy in subtidal–intertidal carbonates: palaeontological and chemostratigraphical evidence from the Turukhansk Uplift, Siberian Platform

Marusin

Кочнев

Karlova

et al. 2019

LET

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“…Because halkieriid-like sclerites occur so early in the Cambrian period 70,71 , their affinity has profound implications for the timing of early trochozoan evolution. Removing halkieriids from Mollusca would shift the origin of this phylum significantly later: notwithstanding hyoliths (now interpreted as brachiozoans, i.e.…”

Section: Resultsmentioning

confidence: 99%

Orthrozanclus elongata n. sp. and the significance of sclerite-covered taxa for early trochozoan evolution

Zhao

Smith

Yin

et al. 2017

Sci Rep

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Orthrozanclus is a shell-bearing, sclerite covered Cambrian organism of uncertain taxonomic affinity, seemingly representing an intermediate between its fellow problematica Wiwaxia and Halkieria. Attempts to group these slug-like taxa into a single ‘halwaxiid’ clade nevertheless present structural and evolutionary difficulties. Here we report a new species of Orthrozanclus from the early Cambrian Chengjiang Lagerstätte. The scleritome arrangement and constitution in this material corroborates the link between Orthrozanclus and Halkieria, but not with Wiwaxia — and calls into question its purported relationship with molluscs. Instead, the tripartite construction of the halkieriid scleritome finds a more compelling parallel in the camenellan tommotiids, relatives of the brachiopods and phoronids. Such a phylogenetic position would indicate the presence of a scleritome in the common ancestor of the three major trochozoan lineages, Mollusca, Annelida and Brachiozoa. On this view, the absence of fossil Ediacaran sclerites is evidence against any ‘Precambrian prelude’ to the explosive diversification of these phyla in the Cambrian, c. 540–530 million years ago.

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Evolution patterns of seawater carbon isotope composition during the Cambrian and their stratigraphic significance

Wang

Jiang

et al. 2020

Geological Journal

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Our current understanding of the Cambrian carbon cycle mostly comes from geologically rapid carbon isotope excursions (CIEs) of marine carbonate. In addition to carbon cycle indicators, stable carbon isotopes of marine carbonates can be used as stratigraphic correlation tools. Previous studies have recognized 10 CIEs in the Cambrian, but only 3 of them appear to have global significance. This limits the application of CIEs in chronostratigraphic correlation of Cambrian successions with the 10 successive stages. Here, we present a continuous carbon isotope record from a stratigraphically complete Cambrian section at Xiaoerbulak, Aksu region in the Tarim Basin, Xinjiang, China. Its comparison with more than 40 sections across the world shows the carbon isotope record of the Cambrian can be divided into 10 units based on the variation patterns. Each pattern has occurrences in at least two Cambrian tectonic plates, suggesting global significance. A generalized curve consisting of the 10 patterns, Carbon Isotope Pattern Curve (CIPC) has been compiled. Based on the fossil records, the 10 patterns are correlated with the 10 stages of the chronostratigraphic system of the Cambrian. The pattern Angularianis correlated with Fortunian Stage and the lower half of Stage 2, Dampingian with the upper part of Stage 2, Boxian with Stage 3, Rabbitian with Stage 4, Chairian with the lower half of Wuliuan, Zigzagian with the upper Wuliuan Stage, Stickian with the Drumian and Guzhangian stages, Towerian with the Paibian Stage and Lower Jiangshan Stage, Shelfian with Upper Jiangshan Stage and the lower half of Stage 10, and Hillian with the upper half of Stage 10.We suggest that the application of CIPC makes the chronostratigraphy of non‐fossiliferous successions realizable.

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Terreneuvian stratigraphy and faunas from the Anabar Uplift, Siberia.

Cited by 75 publications

References 0 publications

Resolving Terreneuvian stratigraphy in subtidal–intertidal carbonates: palaeontological and chemostratigraphical evidence from the Turukhansk Uplift, Siberian Platform

Resolving Terreneuvian stratigraphy in subtidal–intertidal carbonates: palaeontological and chemostratigraphical evidence from the Turukhansk Uplift, Siberian Platform

Orthrozanclus elongata n. sp. and the significance of sclerite-covered taxa for early trochozoan evolution

Evolution patterns of seawater carbon isotope composition during the Cambrian and their stratigraphic significance

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