Results 31 to 40 of about 40,268 (264)

Global taxonomic diversity of anomodonts (tetrapoda, therapsida) and the terrestrial rock record across the Permian-Triassic boundary.

PLoS ONE, 2008
The end-Permian biotic crisis (~252.5 Ma) represents the most severe extinction event in Earth's history. This paper investigates diversity patterns in Anomodontia, an extinct group of therapsid synapsids ('mammal-like reptiles'), through time and in ...
Jörg Fröbisch
doaj   +1 more source

A new stem group echinoid from the Triassic of China leads to a revised macroevolutionary history of echinoids during the end-Permian mass extinction [PDF]

Royal Society Open Science, 2018
The Permian–Triassic bottleneck has long been thought to have drastically altered the course of echinoid evolution, with the extinction of the entire echinoid stem group having taken place during the end-Permian mass extinction. The Early Triassic fossil
Jeffrey R. Thompson, Shi-xue Hu, Qi-Yue Zhang, Elizabeth Petsios, Laura J. Cotton, Jin-Yuan Huang, Chang-yong Zhou, Wen Wen, David J. Bottjer   +8 more
doaj   +1 more source

Sequence stratigraphy, basin morphology and sea-level history for the Permian Kapp Starostin Formation of Svalbard, Norway [PDF]

, 2017
Based on seven measured sections from Svalbard, the marine strata of the Permian Kapp Starostin Formation are arranged into seven transgressive–regressive sequences (TR1–TR7) of c.
ANNA M. DUSTIRA, Biernat, Blomeier, Boreen, Buggisch, Cecchi, Chwieduk, Coe, Cohen, Dallmann, DANIEL COLLINS, DAVID P. G. BOND, DIERK P. G. BLOMEIER, Dunham, Ehrenberg, Ehrenberg, Embry, Ezaki, Hellem, Isbell, Johannessen, Larssen, Lauritzen, Lauritzen, Nakrem, Nakrem, PAUL B. WIGNALL, RALPH D. GROEN, Ronnevik, Siedlecka, Stemmerik, STEPHEN E. GRASBY, Szaniawski, THOMAS GOODE, Tucker, Vail, WERNER BUGGISCH   +36 more
core   +1 more source

Paleoclimate-induced stress on polar forested ecosystems prior to the Permian–Triassic mass extinction

Scientific Reports, 2022
The end-Permian extinction (EPE) has been considered to be contemporaneous on land and in the oceans. However, re-examined floristic records and new radiometric ages from Gondwana indicate a nuanced terrestrial ecosystem response to EPE global change ...
Erik L. Gulbranson, Morgan M. Mellum, Valentina Corti, Aidan Dahlseid, Brian A. Atkinson, Patricia E. Ryberg, Gianluca Cornamusini   +6 more
doaj   +1 more source

Sedimentary geology of the Middle Carboniferous of the Donbas region (Dniepr-Donets basin, Ukraine) [PDF]

, 2015
Peer reviewedPublisher ...
Abels, Hemmo A., Boekhout, Flora, Bosch, Wolter, Geluk, Mark, Hamers, Maartje, Kitchka, Alexander, Stephenson, Randell A., van der Meer, Douwe G., van Hinsbergen, Douwe J.J.   +8 more
core   +2 more sources

Middle Permian Telodiagenetic Processes in Neoproterozoic Sequences, Tandilia System, Argentina [PDF]

Journal of Sedimentary Research, 2007
Abstract In the Tandilia Basin, Buenos Aires Province, Argentina, we study the genesis of mud beds and pipes in the Loma Negra Formation (limestones), Sierras Bayas area, together with the emplacement of alunite and aluminum phosphate sulfate (APS) minerals in the Las Aguilas Formation, Barker area.
Zalba, Patricia Eugenia, Manassero, Marcelo Jorge, Laverret, Emmanuel, Beaufort, Daniel, Meunier, Alain, Morosi, Martín Eduardo, Segovia, Laura   +6 more
openaire   +3 more sources

The geochemical characteristics, distribution of marine source rocks and gas exploration potential in the northwestern Sichuan Basin, China

Journal of Natural Gas Geoscience, 2021
In recent years, the northwestern part of the Sichuan Basin has become a popular location for natural gas exploration. However, up to this point, the geochemical characteristics and distribution of marine source rocks in this area have not been ...
Guoyi Hu, Fei He, Jingkui Mi, Yilin Yuan, Jinhao Guo   +4 more
doaj   +1 more source

Ostracods (Crustacea) associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China) [PDF]

, 2012
26 samples were processed for a taxonomic study of ostracods from the Upper Permian (Changhsingian) - Lower Triassic (Griesbachian) interval of the Dajiang section, Guizhou Province, South China. 112 species belonging to 27 genera are recognized.
Forel, Marie-Béatrice
core   +6 more sources

Report of Investigations No. 123 Petroleum Potential of the Palo Duro Basin, Texas Panhandle [PDF]

, 1982
UT ...
Dutton, Shirley P., Goldstein, Arthur G., Ruppel, Stephen C.   +2 more
core   +1 more source

lranognathus sosioensis n.sp., a New Conodont Species from the Changxingian (Late Permian) of Western Sicily

Geologia Croatica, 2010
Iranognathus sosioensis n.sp., a Changxingian (latest Permian) conodont species of western Sicily, is the youngest Iranognathus species occurring immediately below the Permian-Triassic boundary.The Middle Permian and part of the Late Permian ...
Heinz W. Kozur, Helfried Mostler
doaj   +1 more source