Results 21 to 30 of about 5,951 (169)

The tempo of Ediacaran evolution [PDF]

, 2021
The rise of complex macroscopic life occurred during the Ediacaran Period, an interval that witnessed large-scale disturbances to biogeochemical systems.
Li, Xian-Hua, Condon, Daniel, Grazhdankin, Dmitriy, Macdonald, Francis, Zhu, Maoyan, Condon, Daniel J., Li, X.-H., Macdonald, F.A., Rooney, Alan, Yang, Chuan, Grazhdankin, D.V., Hu, C., Zhu, M., Bowyer, Fred T., Bowyer, Fred, Rooney, Alan D., Rooney, A.D., Bowyer, F.T., Macdonald, Francis A., Grazhdankin, Dmitriy V., Yang, C., Condon, D.J., Hu, Chunlin   +22 more
core   +1 more source

Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran

Frontiers in Earth Science, 2021
A combined magnetostratigraphy for the Rainstorm Member of the Ediacaran Johnnie Formation was constructed using the sediment accumulation rates determined by rock magnetic cyclostratigraphy for three localities of the Rainstorm Member to provide a high ...
Kenneth P. Kodama
doaj   +1 more source

atcribb/Ediacaran-Cambrian-OPD-Controls: Initial-Submission-2

, 2022
This release contains the code for the submission of the article "Ediacaran-Cambrian bioturbators did not oxygenate sediments in shallow marine ...
Alison Cribb
core   +1 more source

Enduring evolutionary embellishment of cloudinids in the Cambrian

Royal Society Open Science, 2021
The Ediacaran–Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be established among animal fossils
Tae-Yoon S. Park, Jikhan Jung, Mirinae Lee, Sangmin Lee, Yong Yi Zhen, Hong Hua, Lucas V. Warren, Nigel C. Hughes   +7 more
doaj   +1 more source

New data on geochemical features, fluid mode, age and potential ore content of granitoids of Isherim anticlinorium (North Ural)

Литосфера, 2018
Granitoids of Ishirim anticlinorium which is one of the major Precambrian structures of the North Urals, are poorly studied by modern geochemical and isotope-geochronological methods that led to the existence of different points of view on formation ...
Georg A. Petrov, Vladimir V. Holodnov, Yurii L. Ronkin   +2 more
doaj   +1 more source

The first animals : ca. 760-million-year-old sponge-like fossils from Namibia [PDF]

, 2012
One of the most profound events in biospheric evolution was the emergence of animals, which is thought to have occurred some 600–650 Ma. Here we report on the discovery of phosphatised body fossils that we interpret as ancient sponge-like fossils and ...
Brain, C.K., Condon, Daniel, Brain, CK, Botha, Andre, Fallick, A., Sturrock, C., Allison, Stuart G., Herd, DA, Prave, A., Fallick, Anthony, Brain, Charles Kimberlin (Bob), Sturrock, Craig, Hoffman, K.H., Allison, Stuart, Allison, SG, Botha, A, Condon, D.J., Botha, A., Allison, S.G., Herd, Donald A., Hoffmann, K-H, Sturrock, C, Prave, Anthony R., Brain, C., Brain, C.K. Bob, Young, I., Condon, Daniel J., Herd, Donald, Herd, D.A., Prave, Anthony, Young, Iain, Prave, AR, Hoffmann, Karl-Heinz, Brain, C. K. 'Bob', Condon, DJ, Fallick, Anthony E., Fallick, AE   +36 more
core   +1 more source

Ediacaran developmental biology [PDF]

, 2017
Rocks of the Ediacaran System (635–541 Ma) preserve fossil evidence of some of the earliest complex macroscopic organisms, many of which have been interpreted as animals. However, the unusual morphologies of some of these organisms have made it difficult
Dunn, Frances S., Liu, Alexander G., Donoghue, Philip C. J.   +2 more
core   +2 more sources

The achievements of Volodymyr Grytsenko in stratigraphy, paleontology and paleoenvironments and in the field of the geoheritage

Geo&Bio, 2018
This paper is about the achievements of V. P. Grytsenko in scientific and pedagogical activity, his discoveries in the field of paleontology and stratigraphy.
M. Reshetnik, K. Rudenko
doaj   +1 more source

Evidence for high-frequency oxygenation of Ediacaran shelf seafloor during early evolution of complex life

Communications Earth & Environment, 2023
Increasing oxygenation of the early Ediacaran Ocean is thought to have been responsible for the emergence of early animals. Although geochemical studies have suggested periods of oceanic oxygenation in the Ediacaran, direct evidence for seafloor ...
Liangxuan Jiao, Zhenbing She, Dominic Papineau, Chao Zhang, Thomas J. Algeo, Matthew S. Dodd, Genming Luo, Kenan Cao, Chao Li   +8 more
doaj   +1 more source

Sedimentology and stratigraphic correlation of Vendian deposits in the southwestern Siberian Craton: Major contribution of an exocratonic clastic source to sedimentary systems

Литосфера, 2018
The study focuses on the sedimentation and stratigraphy of a large Vendian (Ediacaran) sedimentary basin in the southwestern Siberian craton, with implications for the origin of its units and subunits.
Julius K. Sovetov
doaj   +1 more source