Results 41 to 50 of about 3,539 (164)
The Location and Styles of Ice-Free “Oases” during Neoproterozoic Glaciations with Evolutionary Implications [PDF]
, 2012 Evidence based on molecular clocks, together with molecular evidence/biomarkers and putative body fossils, points to major evolutionary events prior to and during the intense Cryogenian and Ediacaran glaciations. The glaciations themselves were of global
Bailey +31 more
core +1 more source
Origins and Alteration of Ediacaran Carbonates Recording the Shuram Excursion in Oman
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.Abstract The Shuram excursion is the largest known negative carbon isotope excursion in Earth's history. Recognized globally, it follows the Ediacaran Gaskiers glaciation and precedes a marked increase in the diversity and complexity of the earliest macroscopic multicellular organisms in the fossil record.
Kristin D. Bergmann +7 more
wiley +1 more source
Acta Palaeobotanica, 2022 A diverse and well-preserved microphytoplankton assemblage is reported from a measured section of Frasnian–Famennian (Upper Devonian) Padeha and Bahram Formations in Shahzadeh Mohammad area, northwestern Kerman, southeast Iran. The palynoflora assemblage
Roghayeh Rouzegar, Péter Ozsvárt
doaj +1 more source
Scotland : Hebridean Terrane [PDF]
, 2011 The Cambrian succession in the Hebridean Terrane extends for about 200 km from near Durness on the northern coast of the Scottish mainland SSW to Skye (Fig. 14). The classic account of the whole region is the memoir by Peach et al.
Molyneux, S.G., Rushton, A.W.A.
core
The Depositional Record, Volume 11, Issue 1, Page 147-181, February 2025.Detailed sedimentologic, petrographic and geochemical analyses of the lacustrine deposits registered on the Ñirihuau Formation middle section in the northern sector of the Ñirihuau Basin are presented. The lacustrine carbonates found within these deposits were analysed to characterise the palaeolake system as well as the carbonate factory of the basin,
Camila Santonja +7 more
wiley +1 more source
Geological Journal, Volume 60, Issue 1, Page 196-222, January 2025.The study examines Cretaceous to Palaeogene sedimentary sequences in the Anambra Basin, part of West African rift basins, utilising geochemical and palynological interpretations to understand organic matter accumulation. Palynofacies and geochemical data indicate a predominantly warm and humid tropical climate during a time of widespread marine ...
Erepamo J. Omietimi +5 more
wiley +1 more source
Publicación Electrónica de la Asociación Paleontológica Argentina, 2010 This paper presents the first palynological record of the Punta Negra Formation, Devonian from the San Juan Precordillera, Argentina. Twelve acritarchs species, 11 spores species, 5 prasinophyte species, 2 chitinozoans genera and one incertae sedis were ...
Claudia V. Rubinstein
doaj
The last common bilaterian ancestor [PDF]
, 2002 Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates.
Davidson, Eric H., Erwin, Douglas H.
core
A peritidal Burgess‐Shale‐type fauna from the middle Cambrian of western Canada
Palaeontology, Volume 68, Issue 1, January/February 2025.Abstract Burgess‐Shale‐type (BST) faunas have proven critical for mapping the Cambrian assembly of animal‐dominated ecosystems, but have so far only been reported from fully subaqueous deposits. Here we integrate evidence from ichnofossils, sedimentary features, and small carbonaceous fossils (SCFs) from the middle Cambrian (Late Guzhangian, Series 3 ...
Giovanni Mussini +2 more
wiley +1 more source
Hydrocarbon‐derived thrombolites from the Outer Carpathians (Lower Cretaceous, Poland)
Sedimentology, Volume 71, Issue 7, Page 2183-2209, December 2024.Abstract Shallow marine thrombolites from a newly discovered Lower Cretaceous cold seep in the Outer Carpathians (Poland) were analysed in order to untangle the complex sedimentological and biogeochemical processes involved in their formation and their diagenetic modifications.
Stefano Giunti +6 more
wiley +1 more source