Different order cyclicity of the Paleozoic reef formation
Известия высших учебных заведений: Геология и разведка, 2019 There are five great cycles of reef formation in Paleozoic — Early Cambrian, Middle—Late Ordovician, Silu-rian—Devonian, Late Visean—Serpukhovian and Permian.
V. G. Kuznetsov, L. M. Zhuravleva
doaj +1 more source
The fossil history of pseudoscorpions (Arachnida: Pseudoscorpiones) [PDF]
Fossil Record, 2017 Pseudoscorpions, given their resemblance to scorpions, have attracted human attention since the time of Aristotle, although they are much smaller and lack the sting and elongated tail. These arachnids have a long evolutionary history but their origins
D. Harms, J. A. Dunlop
doaj +1 more source
Late Devonian red tide and mass extinction
Chinese Science Bulletin, 2002 Molecular stratigraphical, carbonate carbon isotopic, stratigraphical and paleontological data show that algal booming, eutrophication, anoxia, hypersalinity, positive δ13C excursion and biomass decreasing occurred in the offshore carbonate environments of the Frasnian-Famennian (F-F) transition, which hints that red tide might frequently take place in
openaire +1 more source
The stages of сalcareous Algae development in the Urals during Devonian
Литосфера, 2015 The article highlights the following stages of the development microscopic Devonian Algae in the Urals: the rise of Algae in the early Devonian (Karpinski time), degradation of Algae flora during the end of Early Devonian (taltiysk time), the Middle ...
A. L. Anfimov
doaj +2 more sources
Lower Wenlock black shales in the northern Holy Cross Mountains, Poland: Sedimentary and geochemical controls on the Ireviken Event in a deep marine setting [PDF]
, 2016 The stratigraphic variability and geochemistry of Llandovery/Wenlock (L/W) Series boundary sediments in Poland reveals that hemipelagic sedimentation under an anoxic/euxinic water column was interrupted by low density bottom currents or detached diluted ...
Bond, David P. G. +3 more
core +1 more source
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Climatic and eustatic controls on the development of a Late Triassic source rock in the Jameson Land Basin, East Greenland [PDF]
, 2014 This work was undertaken as part of the continuing work of CASP in East Greenland. The sponsoring companies are thanked for their continued support of this work. Help in the field by T. Kinnaird and useful discussions with A.
Andrews, Steven D. +3 more
core +1 more source
Biostratigraphy of the Upper Devonian-Lower Carboniferous deposits in Mighan section, northeast Shahrood, Eastern Alborz [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2019 The Devonian/Carboniferous (DC) transition is characterized by several transgressive/regressive cycles which led to a widespread ocean anoxia known as the Hangenberg Black Shale Event (HBS), close to the D/C boundary a major sea-level fall (Hangenberg ...
Tahere Parvizi +3 more
doaj +1 more source
Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard shelf carbonate system, Canning Basin, Western Australia [PDF]
, 2015 Here we report four high-resolution carbon isotope records in addition to trace element data for the Frasnian–Famennian (F–F) boundary interval in the Lennard Shelf carbonate system of the Canning Basin, Western Australia.
Caulfield-Kerney, Samuel +12 more
core +1 more source
Amplification of Immune Genes in Ancient Stony Corals for Adapting to Unstable Marine Environments
Ocean-Land-Atmosphere ResearchThe Late Devonian period was known for disturbances such as lower temperatures and abnormal ocean carbon and nitrogen levels, leading to the extinction of approximately 21% of genus-level and 16% of family-level marine organisms.
Tianzhen Wu, Yanli Lei, Zhimin Jian
doaj +1 more source