Integrated chemo- and biostratigraphic calibration of early animal evolution: Neoproterozoic–early Cambrian of southwest Mongolia

Brasier, Martin D.; Shields, Graham; Кулешов, В. Н.; Жегалло, Е. А.

doi:10.1017/s0016756800007603

Cited by 290 publications

(175 citation statements)

References 53 publications

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“…The majority of bilaterian skeletal fossils of the Terreneuvian Series belong to these latter groups. Their first appearances occurred in beds younger than the Precambrian-Cambrian boundary and the carbon isotope negative anomaly associated with this boundary (Narbonne, Kaufman & Knoll, 1994;Brasier et al 1996;Kimura et al 1997;Li et al 2009), but not younger than those with Siberian δ 13 C feature Z and attributed to the upper Anabarites trisulcatus-lower Purella zones of the NemakitDaldynian Stage (Brasier, Khomentovsky & Corfield, 1993;Brasier, et al 1994a,b). These first appearances can be correlated with the Anabarites trisulcatusProtohertzina anabarica (SSF1) Assemblage Zone of the lower Meishucunian Stage of South China, where all of them except shells of molluscs occur in beds older than the tuffite with a combined depositional age of 535.2 ± 1.7 Ma (Zhu et al 2009).…”

Section: Discussionmentioning

confidence: 99%

“…6a. Zones after Brasier et al (1996). A -correlation with Siberia, after Voronin et al (1982), Astashkin et al (1995), and Esakova & Zhegallo (1996); B -chemostratigraphic correlation, after Brasier et al (1996).…”

Section: Chronology Of Early Cambrian Biomineralizationmentioning

confidence: 96%

“…Voronin et al (1982) defined the Stenothecoides Zone in Western Mongolia at a level correlated chemostratigraphically (cf. Brasier et al 1996;Fig. 5) with prominent positive peaks of the uppermost Nemakit-Daldynian Stage of the Siberian Platform.…”

Section: I Stenothecoidsmentioning

confidence: 99%

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Chronology of early Cambrian biomineralization

et al. 2011

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-Data on the first appearances of major animal groups with mineralized skeletons on the Siberian Platform and worldwide are revised and summarized herein with references to an improved carbon isotope stratigraphy and radiometric dating in order to reconstruct the Cambrian radiation (popularly known as the 'Cambrian explosion') with a higher precision and provide a basis for the definition of Cambrian Stages 2 to 4. The Lophotrochozoa and, probably, Chaetognatha were first among protostomians to achieve biomineralization during the Terreneuvian Epoch, mainly the Fortunian Age. Fast evolutionary radiation within the Lophotrochozoa was followed by radiation of the sclerotized and biomineralized Ecdysozoa during Stage 3. The first mineralized skeletons of the Deuterostomia, represented by echinoderms, appeared in the middle of Cambrian Stage 3. The fossil record of sponges and cnidarians suggests that they acquired biomineralized skeletons in the late Neoproterozoic, but diversification of both definite sponges and cnidarians was in parallel to that of bilaterians. The distribution of calcium carbonate skeletal mineralogies from the upper Ediacaran to lower Cambrian reflects fluctuations in the global ocean chemistry and shows that the Cambrian radiation occurred mainly during a time of aragonite and high-magnesium calcite seas.

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Section: Discussionmentioning

confidence: 99%

Section: Chronology Of Early Cambrian Biomineralizationmentioning

confidence: 96%

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Chronology of early Cambrian biomineralization

et al. 2011

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“…Secular changes in C and Sr isotopic compositions have proved useful both as correlation tools and as biogeochemical indicators in late carbonates, permitting relatively fine-scale correlation of successions worldwide Brasier et al, 1996;Kaufman et al, 1997). Furthermore, the pronounced fluctuations in C, Sr, and S isotopic composition observed during this interval likely record similarly strong changes in climate, global C cycling and the atmospheric oxygen budget (Derry et al, 1992;Knoll, 1992;Des Marais, 1994;Strauss, 1997;Hoffman et al, 1998;Canfield, 1999).…”

Section: Introductionmentioning

confidence: 99%

Global events across the Mesoproterozoic–Neoproterozoic boundary: C and Sr isotopic evidence from Siberia

Bartley¹,

Семихатов²,

Kaufman³

et al. 2001

Precambrian Research

171

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“…10). Other carbonate dominated, Precambrian-Cambrian boundary successions that contain the N sC isotopic event include Oman (Amthor et al, 2003), China (Lambert et al, 1987), Mongolia (Brasier et al, 1996), and Morocco (Tucker, 1986). SB 4 is easily correlated into the Mackenzie Mountains.…”

Section: Global Correlationsmentioning

confidence: 99%

Integrated Ediacaran chronostratigraphy, Wernecke Mountains, northwestern Canada

Pyle

Narbonne

James

et al. 2004

Precambrian Research

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Terminal Neoproterozoic (Ediacaran, ca. 600-543 Ma) strata of the upper part of the Windermere Supergroup are well-exposed in the Mackenzie Mountains and the Wernecke Mountains of northwestern Canada. Windermere strata in the Mackenzie Mountains contain an exceptional Ediacaran biostratigraphic and isotopic (C and Sr) record, while the sequence stratigraphic record is subtle throughout this predominantly deep-water succession. Coeval strata in the Wernecke Mountains can be correlated with the succession in the Mackenzie Mountains on a formational level. In contrast to the deep-water setting of the Mackenzies succession, the Werneckes succession preserves a predominantly shallow-water succession amenable to detailed sequence stratigraphy. Integrated lithostratigraphy, chemostratigraphy, biostratigraphy and sedimentology partitions the Wernecke Mountains succession into five depositional sequences and constrains correlation with strata in the Mackenzie Mountains. The siliciclastic and carbonate sediments, deposited along the margin of the proto-Pacific Ocean, record accumulation in continental slope, neritic, and terrestrial paleoenvironments. Distinctive temporal chemostratigraphic and biostratigraphic attributes allow these strata to be correlated with other Ediacaran successions worldwide. Integrating sequence stratigraphy with these attributes is a robust, yet under-utilized correlation tool and is a step toward erecting a more detailed working Neoproterozoic chronostratigraphy.

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Integrated chemo- and biostratigraphic calibration of early animal evolution: Neoproterozoic–early Cambrian of southwest Mongolia

Cited by 290 publications

References 53 publications

Chronology of early Cambrian biomineralization

Chronology of early Cambrian biomineralization

Global events across the Mesoproterozoic–Neoproterozoic boundary: C and Sr isotopic evidence from Siberia

Integrated Ediacaran chronostratigraphy, Wernecke Mountains, northwestern Canada

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