Cambrian small skeletal fossil and carbon isotope records of the southern Huangling Anticline, Hubei (China) and implications for chemostratigraphy of the Yangtze Platform

Steiner, Michael; Yang, Ben; Hohl, Simon V.; Zhang, Lei; Chang, Shan Chwen

doi:10.1016/j.palaeo.2020.109817

Cited by 40 publications

(61 citation statements)

References 48 publications

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“…Similar positive carbon isotope excursions are common in shallow carbonate platforms during Cambrian Stages 3–4, such as the multiple excursions (IV to VIII) of the Siberian Platform or the fewer positive excursions (MICE, CARE, Zhu et al., 2006) of the Yangtze Platform. However, we consider these strongly positive carbon isotope excursions likely reflecting local variations in the aquafacies (Steiner et al., 2020). Negative O isotope values recorded for Telmen exceed reported values for Phanerozoic carbonates (Veizer et al., 1999).…”

Section: Discussionmentioning

confidence: 99%

Rewriting the Cambrian Biogeography of the Central Asian Orogenic Belt Using Combined Faunal Cluster, Zircon Age and C Isotope Analysis

Steiner

Hohl

Yang

et al. 2021

Geophysical Research Letters

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Paleogeographic reconstructions are fundamental to our understanding of the co-evolution of the geo-and biosphere on Earth, in particular for critical evolutionary stages, such as the Cambrian Bioradiation Event. However, paleogeographic reconstructions solely based on paleomagnetic studies become increasingly controversial in deep-time, primarily due to increased crustal recycling, metamorphism and resulting remagnetization. As a result, most paleogeographic reconstructions for the Cambrian only show positions of larger paleocontinents while oceanic crustal fragments are missing, partly indicating significant discrepancies for the positions of continents (

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Section: Discussionmentioning

confidence: 99%

Rewriting the Cambrian Biogeography of the Central Asian Orogenic Belt Using Combined Faunal Cluster, Zircon Age and C Isotope Analysis

Steiner

Hohl

Yang

et al. 2021

Geophysical Research Letters

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“…(Figs. 1, 2) were collected from Bed 5 of the well-studied Yanjiahe Formation (Chen, 1984; Guo et al, 2008, 2014, 2020a, b, c; Chang et al, 2018, 2020; Steiner et al, 2020) in the measured Yanjiahe section near the city of Yichang (Guo et al, 2020b, fig. 1.1–1.4).…”

Section: Methodsmentioning

confidence: 99%

A ten-faced hexangulaconulariid from Cambrian Stage 2 of South China

et al. 2021

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Hexangulaconulariids (Cambrian stages 1–2) are an extinct group of medusozoan polyps having a biradially symmetrical, fan-shaped periderm that is distinct from those of medusozoan polyps showing three-, four-, five-, or six-fold radial symmetry. Hexangulaconulariids exhibit substantial variation in gross morphology, including variation in the number of faces on each of the two major sides of the periderm. An intermediate taxon of hexangulaconulariids with ten faces (five on each major side) was expected. Here we describe a new hexangulaconulariid, Decimoconularia isofacialis new genus new species from Bed 5 of the Yanjiahe Formation (Cambrian Stage 2) in the Three Gorges area of Hubei Province, China. The new taxon differs from other hexangulaconulariids (Arthrochites, Hexaconularia, and Septuconularia) mainly in possessing a total of ten faces. The two lateral margins are each marked by a ridge in about the apertural half of the periderm and by a collinear furrow in about the apical half, while the five faces on each major side are bounded by a furrow in about the apertural half and by a collinear ridge in about the apical half. Among hexangulaconulariids, Decimoconularia and Septuconularia may be more closely related to each other than either genus is to Arthrochites or Hexaconularia. UUID: http://zoobank.org/ca270a3b-25ee-4d1f-bdeb-91a963370e70

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“…The Ediacaran Dengying Formation carbonates are disconformably overlain by Terreneuvian (Fortunian-Stage 2) lower Cambrian deposits. The lowermost Cambrian unit is the Yanjiahe Formation, containing abundant small shelly fossils (SSF) that are assigned to three SSF assemblage zones (in ascending order): the Anabarites trisulcatus-Protohertzina anabarica assemblage zone, the Purella antiqua assemblage zone, and the Aldanella yanjiaheensis assemblage zone (Guo et al, 2008(Guo et al, , 2014Chang et al, 2017Chang et al, , 2018Steiner et al, 2020). The Shuijingtuo Formation (black shale and limestone) disconformably overlies the Yanjiahe Formation, and has yielded abundant and diverse shelly fossils, including brachiopods, in addition to the oldest eodiscoid trilobites in South China (Wang et al, 1987;Lin et al, 2004;Steiner et al, 2007;Dai and Zhang, 2011;Yang et al, 2015;Z.L.…”

Section: Geological Settingmentioning

confidence: 99%

“…documented the brachiopod assemblages from carbonate rocks of the upper *Corresponding author Shuijingtuo Formation in the Yangtze Platform of western Hubei Province. These faunas also permitted detailed studies of shell ultrastructure, ontogeny, and allometric development (Zhang et al, 2018a(Zhang et al, , b, 2020. However, taxonomic diversity of the brachiopod fauna from the overlying siltstones and mudstones of the Shipai Formation (Stage 4) remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Early Cambrian (Stage 4) brachiopods from the Shipai Formation in the Three Gorges area of South China

et al. 2021

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Diverse and abundant fossil taxa have been described in the lower Cambrian Shipai Formation in the Three Gorges area of Hubei Province, South China, but the taxonomy and diversity of the co-occurring brachiopod fauna are still far from clear. Here we describe the brachiopod fauna recovered from the Shipai Formation in the Three Gorges area of South China, including representatives of the subphylum Linguliformea: linguloids (Lingulellotreta ergalievi, Eoobolus malongensis, and Neobolidae gen. indet. sp. indet.), and an acrotretoid (Linnarssonia sapushanensis); and representatives from the subphylum Rhynchonelliformea: the calcareous-shelled Kutorginates (Kutorgina sinensis, Kutorgina sp., and Nisusia liantuoensis). This brachiopod assemblage and the first occurrence of Linnarssonia sapushanensis shell beds permit correlation of the Shipai Formation in the Three Gorges area of Hubei Province with the Stage 4 Wulongqing Formation in the Wuding area of eastern Yunnan. This correlation is further strengthened by the first appearance datum (FAD) of the rhynchonelliform brachiopod Nisusia in the upper silty mudstone of both the Shipai and Wulongqing formations. The new well-preserved material, derived from siliciclastic rocks, also gives critical new insights into the fine shell structure of L. sapushanensis. Microstructural studies on micromorphic acrotretoids (like Linnarssonia) have previously been restricted to fossils that were acid-etched from limestones. This is the first study to carry out detailed comparative ultrastructural studies on acrotretoid shells preserved in siliciclastic rocks. This work reveals a hollow tube and solid column microstructure in the acrotretoid shells from the Shipai Formation, which is likely to be equivalent of traditional column and central canal observed in shells dissolved from limestones.

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Cambrian small skeletal fossil and carbon isotope records of the southern Huangling Anticline, Hubei (China) and implications for chemostratigraphy of the Yangtze Platform

Cited by 40 publications

References 48 publications

Rewriting the Cambrian Biogeography of the Central Asian Orogenic Belt Using Combined Faunal Cluster, Zircon Age and C Isotope Analysis

Rewriting the Cambrian Biogeography of the Central Asian Orogenic Belt Using Combined Faunal Cluster, Zircon Age and C Isotope Analysis

A ten-faced hexangulaconulariid from Cambrian Stage 2 of South China

Early Cambrian (Stage 4) brachiopods from the Shipai Formation in the Three Gorges area of South China

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