Results 1 to 10 of about 296 (104)

Environmental and diagenetic controls on the morphology and calcification of the Ediacaran metazoan Cloudina [PDF]

open access: yesScientific 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 ...
Amy Shore, Rachel Wood
doaj   +3 more sources

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

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   +4 more sources

Enduring evolutionary embellishment of cloudinids in the Cambrian [PDF]

open access: yesRoyal 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   +7 more
doaj   +2 more sources

First occurrence of Cloudina carinata Cortijo et al., 2010 in South America, Tamengo Formation, Corumbá Group, upper Ediacaran of Midwestern

open access: yesEstudios Geologicos, 2019
It is herein presented the unprecedented occurrence of Cloudina carinata Cortijo et al., 2010 in the American continent. This new occurrence expanded the geographic distribution of this species, until now reported from sections in Spain and Siberia.
R. R. Adôrno   +8 more
doaj   +2 more sources

Sesgo tafonómico en los datos de distribución de Cloudina en Siberia

open access: yesEstudios 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   +2 more sources

Ediacaran-Cambrian paleosols of Nevada and California. [PDF]

open access: yesPLoS ONE
The 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

Reevaluación de la tafonomía de las asociaciones conservadas in situ de Cloudina en la Formación de Tagatiya Guazu, Grupo ediacárico de Itapucumi, Paraguay

open access: yesEstudios Geologicos, 2019
La asociación fósil de la Formación de Tagatiya Guazu (Grupo ediacárico de Itapucumi, Paraguay) representa una oportunidad única para investigar los parámetros paleoecológicos y contribuir con información taxonómica sobre las asociaciones de Cloudina en ...
L. Inglez   +3 more
doaj   +2 more sources

New insight into the global record of the Ediacaran tubular morphotype: a common solution to early multicellularity [PDF]

open access: yesRoyal Society Open Science
The 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

The Ediacaran-Cambrian Radiation of Animals within the Villuercas-Ibores-Jara UNESCO Global Geopark, Spain [PDF]

open access: yesGeoconservation Research, 2021
Across the Ediacaran to Cambrian transition, some 541 Ma, the Earth's biosphere changed from one dominated by microbial organisms to one where multicellular organisms, including animals, rose to importance. Within a few tens of millions of years into the
Iván Cortijo   +3 more
doaj   +1 more source

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