Results 141 to 150 of about 16,764 (247)

Comment on ‘‘Geodynamic evolution of the SW Europe [PDF]

open access: yes, 2009
Ribeiro et al. [2007] have presented a geodynamic view of the SW Iberia Variscides based on data from Portugal. Their treatment of already published data is commendable, and the knowledge gained will surely encourage the discussion of the SWEurope ...
Chichorro, Martim   +2 more
core   +1 more source

Uranium isotope evidence for an expansion of anoxia in terminal Ediacaran oceans

open access: yesEarth and Planetary Science Letters, 2019
Anoxic and iron-rich oceanic conditions prevailed throughout most of the Archean and Proterozoic (4000 to c.540 million years ago, Ma), but the oceans are hypothesised to have become progressively oxygen-rich during the Ediacaran–Cambrian transition ...
R. Tostevin   +7 more
semanticscholar   +1 more source

Evolution: An Ediacaran ecdysozoan

open access: yesCurrent Biology
A new study describes a fossilized ecdysozoan from Ediacaran rocks, extending the body fossil record for this hyper-diverse group and emphasizing the pivotal insights provided by Ediacaran fossils in documenting the early evolutionary history of major animal clades.
openaire   +2 more sources

Rheotropic Epifaunal Growth, Not Felling by Density Currents, Is Responsible for Many Ediacaran Fossil Orientations at Mistaken Point

open access: yesFrontiers in Earth Science, 2022
D. McIlroy   +5 more
doaj   +1 more source

Ecological interactions in Cloudina from the Ediacaran of Brazil: implications for the rise of animal biomineralization

open access: yesScientific Reports, 2017
At the Ediacaran/Cambrian boundary, ecosystems witnessed an unparalleled biological innovation: the appearance of shelled animals. Here, we report new paleoecological and paleobiological data on Cloudina, which was one of the most abundant shelled ...
Bruno Becker-Kerber   +5 more
doaj   +1 more source

The enduring Ediacaran paleomagnetic enigma

open access: yesEarth-Science Reviews, 2023
M. Domeier   +6 more
semanticscholar   +1 more source

Developing proxies to constrain redox gradients in terminal Ediacaran oceans [PDF]

open access: yes, 2015
There is a long-standing interest in the relationship between the rise of early Metazoans and changes in the redox structure of the oceans. As such, there is a need for reliable geochemical proxy archives that record palaeo-redox.
Tostevin, R
core  

Global and local drivers of the Ediacaran Shuram carbon isotope excursion

open access: yesEarth and Planetary Science Letters, 2022
J. Busch   +7 more
semanticscholar   +1 more source

In silico transitions to multicellularity

open access: yes, 2014
The emergence of multicellularity and developmental programs are among the major problems of evolutionary biology. Traditionally, research in this area has been based on the combination of data analysis and experimental work on one hand and theoretical ...
Duran-Nebreda, Salva, Solé, Ricard V.
core   +1 more source

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