Results 21 to 30 of about 14,980 (261)
Mineralogy, petrography, geochemistry of magnetite ore and sulfide minerals and the possible model of mineralization at Anomaly#3, Gol-e-Gohar, iron mine, Sirjan, Kerman [PDF]
پترولوژی, 2019 The Gol-e-Gohar anomaly#3 of Sirjan was initially formed by synchronous submarine basaltic volcanism and sedimentary rocks (basalt, shale, carbonates, sandstone, marl, chert-iron hydroxide-oxides) during Neoproterozoic (Ediacaran) and subsequently ...
Moslem Badavi +2 more
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Relating Ediacaran Fronds [PDF]
Paleobiology, 2016 AbstractEdiacaran fronds are key components of terminal-Proterozoic ecosystems. They represent one of the most widespread and common body forms ranging across all major Ediacaran fossil localities and time slices postdating the Gaskiers glaciation, but uncertainty over their phylogenetic affinities has led to uncertainty over issues of homology and ...
Dececchi, Thomas Alexander +3 more
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Ediacaran developmental biology [PDF]
Biological Reviews, 2017 ABSTRACTRocks 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 to resolve their biological relationships to modern metazoan groups. Alternative competing
Dunn, Frances +2 more
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Filamentous Connections between Ediacaran Fronds [PDF]
Current Biology, 2020 Fossils of the Ediacaran macrobiota (∼571-539 mya) record phylogenetically diverse marine palaeocommunities, including early animals, which pre-date the "Cambrian Explosion" [1-4]. Benthic forms with a frondose gross morphology, assigned to the morphogroups Rangeomorpha [5] and Frondomorpha (see also Arboreomorpha) [6-8], are among the most temporally ...
Liu, Alexander G, Dunn, Frances S
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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
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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 +2 more
core +6 more sources
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 +7 more
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The tempo of Ediacaran evolution [PDF]
Science Advances, 2021 New radio-isotopic data bracket the age of late Ediacaran fossil assemblages and two negative carbon isotope excursions.
Chuan Yang +8 more
openaire +6 more sources
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 +2 more
doaj +1 more source
Causes and consequences of end-Ediacaran extinction: An update
Cambridge Prisms: Extinction, 2023 Since the 1980s, the existence of one or more extinction events in the late Ediacaran has been the subject of debate. Discussion surrounding these events has intensified in the last decade, in concert with efforts to understand drivers of global change ...
Simon A.F. Darroch +5 more
doaj +1 more source