A new species of the deuterostome Herpetogaster from the early Cambrian Chengjiang biota of South China
Sign Up to like & getrecommendations! Published in 2020 at "Die Naturwissenschaften"
DOI: 10.1007/s00114-020-01695-w
Abstract: The Cambrian radiation represents a key time period in the history of life. Here, we add to the mounting evidence accumulating on the nature of deuterostomes from this time period through description of a new… read more here.
Keywords: chengjiang biota; new species; early cambrian; deuterostome herpetogaster ... See more keywords
Surface water oxygenation and bioproductivity – A link provided by combined chromium and cadmium isotopes in Early Cambrian metalliferous black shales (Nanhua Basin, South China)
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DOI: 10.1016/j.chemgeo.2020.119785
Abstract: Abstract The intrinsic link between atmospheric oxygenation, surface seawater redox and bioproductivity in the upper water column of oceans offers to combine cadmium with chromium isotopes in marine archives to deduce information on past controls… read more here.
Keywords: water; bioproductivity; surface; black shales ... See more keywords
Spatio-temporal evolution of ocean redox and nitrogen cycling in the early Cambrian Yangtze ocean
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DOI: 10.1016/j.chemgeo.2020.119803
Abstract: Abstract The early Cambrian was a critical interval for the Earth system, during which a rise in oceanic and atmospheric oxygen levels coincided with the rapid diversification of metazoans. A variety of contrasting models have… read more here.
Keywords: ocean; evolution; redox; early cambrian ... See more keywords
Signals of combined chromium–cadmium isotopes in basin waters of the Early Cambrian – Results from the Maoshi and Zhijin sections, Yangtze Platform, South China
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DOI: 10.1016/j.chemgeo.2021.120061
Abstract: Abstract The combination of authigenic chromium and cadmium stable isotopes in marine sedimentary archives enables reconstruction of the redox conditions and levels of primary productivity in past oceans and basins. The Ediacaran to Cambrian Nanhua… read more here.
Keywords: yangtze platform; chromium; early cambrian; chromium cadmium ... See more keywords
Skolithos linearis Haldeman, 1840 at its early Cambrian type locality, Chickies Rock, Pennsylvania: Analysis and designation of a neotype
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DOI: 10.1016/j.earscirev.2018.05.009
Abstract: Abstract The trace fossil Skolithos, with its simple, vertical to very slightly inclined, tubular form, is widely recognized and globally distributed in early Cambrian to Holocene strata, representing deep-sea to continental paleoenvironments. The type species,… read more here.
Keywords: skolithos; haldeman; skolithos linearis; type locality ... See more keywords
Early Cambrian chronostratigraphy and geochronology of South Australia
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DOI: 10.1016/j.earscirev.2018.06.005
Abstract: Abstract The most successful chronostratigraphic correlation methods enlist multiple proxies such as biostratigraphy and chemostratigraphy to constrain the timing of globally important bio- and geo-events. Here we present the first regional, high-resolution shelly fossil biostratigraphy… read more here.
Keywords: south australia; cambrian successions; early cambrian; lower cambrian ... See more keywords
Geochemical and geochronological constraints on distinct Early-Neoproterozoic and Cambrian accretionary events along southern margin of the Baydrag Continent in western Mongolia
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DOI: 10.1016/j.gr.2016.09.008
Abstract: Abstract New geological, geochemical and geochronological data characterize architecture and geodynamic evolution of the southern Baydrag continental margin in Mongolia. The structurally deepest Zamtyn Nuruu Complex is composed of highly deformed orthogneisses and amphibolites intruded… read more here.
Keywords: early cambrian; subduction; geochemical geochronological; geochronological constraints ... See more keywords
Redox history of the Three Gorges region during the Ediacaran and Early Cambrian as indicated by the Fe isotope
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DOI: 10.1016/j.gsf.2017.02.005
Abstract: The Ediacaran–Cambrian transition is characterized by numerous events such as the emergence of large multi-cellular metazoans and surface environmental disturbances. Based on geological evidence, it has been proposed that this transition coincided with the increase… read more here.
Keywords: gorges region; redox; three gorges; early cambrian ... See more keywords
Anomalously high enrichment of mercury in early Cambrian black shales in South China
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DOI: 10.1016/j.jseaes.2021.104794
Abstract: Abstract The widespread lower Cambrian black shales reflect a significant anoxic event during a global transgression, recording synergistic changes in the marine environment and biological evolution. Extremely high Hg (714 to 6187 ppb, average is… read more here.
Keywords: black shales; cambrian black; early cambrian; south china ... See more keywords
Evaluating episodic hydrothermal activity in South China during the early Cambrian: Implications for biotic evolution
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DOI: 10.1016/j.marpetgeo.2020.104355
Abstract: Abstract The early Cambrian (541–514 Ma) was a crucial interval for the evolution of life on Earth, popularly known as the “Cambrian Explosion”. Here, we report the timing of changes in hydrothermal and depositional inputs, as… read more here.
Keywords: cam; south china; cam iii; formation cam ... See more keywords
Shift in limiting nutrients in the late Ediacaran–early Cambrian marine systems of South China
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DOI: 10.1016/j.palaeo.2019.05.036
Abstract: Abstract The Ediacaran to Cambrian periods are characterized by the diversification and extinction of metazoans, carbon-cycle perturbation, and ocean oxygenation. Ocean nutrient cycles play a major role in the primary production and productivity-driven shallow water… read more here.
Keywords: late ediacaran; south china; ediacaran early; shift ... See more keywords