Results 31 to 40 of about 5,951 (169)

The role of volcanic-derived clays in the preservation of Ediacaran biota from the Itajaí Basin (ca. 563 Ma, Brazil)

Scientific Reports, 2021
The early evolution of metazoans has been reconstructed by studies on exceptionally preserved molds in siliciclastic rocks from the Ediacaran Period.
Bruno Becker-Kerber, Abderrazak El Albani, Kurt Konhauser, Ahmed Abd Elmola, Claude Fontaine, Paulo S. G. Paim, Arnaud Mazurier, Gustavo M. E. M. Prado, Douglas Galante, Pedro B. Kerber, Ana L. Z. da Rosa, Thomas R. Fairchild, Alain Meunier, Mírian L. A. F. Pacheco   +13 more
doaj   +1 more source

The occurrence of Dickinsonia in non-marine facies

Estudios Geologicos, 2019
Dickinsonia in the central Urals occurs in a succession transitional from marginal marine to non-marine. Even within this sequence Dickinsonia appears to be restricted to the least marine facies interpreted as a coastal lagoon surrounded by tidal flats ...
N. I. Bobkov, A. V. Kolesnikov, A. V. Maslov, D. V. Grazhdankin   +3 more
doaj   +1 more source

New Facies Model and Carbon Isotope Stratigraphy for an Ediacaran Carbonate Platform From South America (Tamengo Formation—Corumbá Group, SW Brazil)

Frontiers in Earth Science, 2022
The Ediacaran is a period characterized by the diversification of early animals and extensive neritic carbonate deposits. These deposits are still not well understood in terms of facies and carbon isotope composition (δ13C). In this study we focus on the
Maria E. A. F. Ramos, Martino Giorgioni, Detlef H. G. Walde, Dermeval A. do Carmo, Gabriella Fazio, Lucieth C. Vieira, Matheus Denezine, Roberto V. Santos, Rodrigo R. Adôrno, Rodrigo R. Adôrno, Lucas Lage Guida   +10 more
doaj   +1 more source

The puzzle assembled: Ediacaran guide fossil Cloudina reveals an old proto-Gondwana seaway [PDF]

, 2014
During the Ediacaran the Clymene Ocean separated the Laurentia, Amazonia, and Rio Apa cratons from several landmasses to the west forming the proto-Gondwana supercontinent.
Strikis, Nicolás, Strikis, Pedro C., Warren, L. V. [UNESP], Poire, Daniel Gustavo, Riccomini, Claudio, Quaglio, Fernanda, Simoes, Marcelo, Poire, D. G., Simoes, M. G. [UNESP], Riccomini, C., Quaglio, F., Anelli, Luis E., Strikis, N. M., Anelli, L. E., Strikis, P. C., Warren, L. V., Simoes, M. G., Warren, Lucas V., Quaglio, F. [UNESP]   +18 more
core   +1 more source

Strike-slip fault system and its control on ediacaran hydrocarbon system in central Sichuan Basin: insights from petrology, U-Pb dating and seismic interpretation

Frontiers in Earth Science
Strike-slip faults are closely related to the enrichment of hydrocarbon resources, with a series of large oil and gas fields associated with strike-slip faults discovered in regions such as the Ordos Basin in China and the West Siberian Basin.
Yongjing Cen, Jianhai Li, Feng Liang, Lien Wang, Xin Zhang   +4 more
doaj   +1 more source

Recurrent photic zone euxinia limited ocean oxygenation and animal evolution during the Ediacaran

Nature Communications, 2023
The Ediacaran Period (~635–539 Ma) is marked by the emergence and diversification of complex metazoans linked to ocean redox changes, but the processes and mechanism of the redox evolution in the Ediacaran ocean are intensely debated. Here we use mercury
Wang Zheng, Anwen Zhou, Swapan K. Sahoo, Morrison R. Nolan, Chadlin M. Ostrander, Ruoyu Sun, Ariel D. Anbar, Shuhai Xiao, Jiubin Chen   +8 more
doaj   +1 more source

Metacommunity analyses show an increase in ecological specialisation throughout the Ediacaran period.

PLoS Biology, 2022
The first animals appear during the late Ediacaran (572 to 541 Ma); an initial diversity increase was followed reduction in diversity, often interpreted as catastrophic mass extinction.
Rebecca Eden, Andrea Manica, Emily G Mitchell   +2 more
doaj   +1 more source

Dendrogramma, new Genus, with two new non- bilaterian species from the Marine Bathyal of Southeastern Australia (Animalia, Metazoa incertae sedis) – with similarities to some medusoids from the precambrian ediacara [PDF]

, 2014
This study examines a new species of dinosaur named Dendrogramma, which has been found near Bass Strait. Abstract A new genus, Dendrogramma, with two new species of multicellular, non-bilaterian, mesogleal animals with some bilateral aspects, D ...
Jean Just, Jorgen Olesen, Reinhardt Mobjerg Kristensen, Olesen, Jørgen, Just, Jean, Kristensen, Reinhardt Møbjerg   +5 more
core   +1 more source

Lithochemical features of the rocks of the Hrushka Formation of the lower vend of the Podillya structural-facies zone

Мінеральні ресурси України
Silicate analyzes of siltstones, argillites, sandstones, gravelites, and conglomerates were used to examine the lithochemical features of the clastic rocks of the Hrushka Formation.
T. M. Sokur, O. A. Sukhov, I. V. Vasileva   +2 more
doaj   +1 more source

Palaeolatitudinal distribution of the Ediacaran macrobiota

, 2021
Macrofossils of the late Ediacaran Period ( c. 579–539 Ma) document diverse, complex multicellular eukaryotes, including early animals, prior to the Cambrian radiation of metazoan phyla.

core   +1 more source