Environmental and diagenetic controls on the morphology and calcification of the Ediacaran metazoan Cloudina [PDF]
Scientific Reports, 2021 Cloudina is a globally distributed Ediacaran metazoan, with a tubular, funnel-in-funnel form built of thin laminae (ca. 1–10 μm). To what degree local environmental controlled morphology, and whether early diagenesis controlled the degree of ...
Rachel Wood
exaly +6 more sources
Ecological interactions in Cloudina from the Ediacaran of Brazil: implications for the rise of animal biomineralization [PDF]
Scientific 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 +2 more
exaly +10 more sources
Enduring evolutionary embellishment of cloudinids in the Cambrian [PDF]
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
Sangmin Lee +2 more
exaly +4 more sources
Sesgo tafonómico en los datos de distribución de Cloudina en Siberia
Estudios Geologicos, 2019 En Siberia los morfotipos de Cloudina han sido tradicionalmente considerados como una variedad tafonómica de conchas de Anabarites, insertadas una dentro de otra, bajo condiciones hidrodinámicas específicas.
G. Markov +3 more
doaj +5 more sources
The evolution of reproduction in Ediacaran-Cambrian metazoans. [PDF]
Biol Rev Camb Philos SocABSTRACT The evolution of reproductive style is a fundamental aspect of metazoan life history but has not been explored holistically through the Ediacaran–Cambrian rise of metazoans. Recent molecular clock analyses based on only unequivocal metazoan fossil calibrations suggest that Porifera were present by at least 590 million years ago (Ma), all major
Wood RA, Droser ML.
europepmc +2 more sources
Multiscale approach reveals that Cloudina aggregates are detritus and not in situ reef constructions. [PDF]
Proc Natl Acad Sci U S A, 2018 Significance Little is known about how the Ediacaran index fossil Cloudina lived and what impact it had on its surroundings. This uncertainty is due to the fact that Cloudina often is preserved with the same mineralogy as the rocks in ...
Mehra A, Maloof A.
europepmc +4 more sources
Dawn of diverse shelled and carbonaceous animal microfossils at ~ 571 Ma [PDF]
Scientific ReportsThe Ediacaran-Cambrian transition documents a critical stage in the diversification of animals. The global fossil record documents the appearance of cloudinomorphs and other shelled tubular organisms followed by non-biomineralized small carbonaceous ...
Luana Morais +15 more
doaj +2 more sources
Ediacaran-Cambrian paleosols of Nevada and California. [PDF]
PLoS ONEThe Cambrian and Ediacaran sequence of California and Nevada is rife with unconformities, paleovalleys, paleosols, and fluvial facies. This study confirms shallow marine environments for grey stromatolitic dolostone and shale of northern localities (Mt ...
Gregory J Retallack
doaj +2 more sources
Microbialite Diversity and Ocean Redox Geochemistry of the Late Tonian Callison Lake Formation. [PDF]
GeobiologyABSTRACT Microbialites provide a unique insight into ancient microbial processes and environments, but trends in the diversity of unlaminated microbialites remain poorly understood. The ca. 745 Ma Callison Lake Formation in the Yukon (northwest Canada) features a range of microbialites which are diverse at both the mesoscale and microscale.
Spruzen C +5 more
europepmc +2 more sources
New insight into the global record of the Ediacaran tubular morphotype: a common solution to early multicellularity [PDF]
Royal Society Open ScienceThe tubular morphogroup is a common component of Earth’s first complex, multicellular communities—the Ediacaran biota—and offers valuable insight into biological traits that are fundamental to animal life because they have intriguing links to metazoan ...
Rachel L. Surprenant, Mary L. Droser
doaj +2 more sources