Results 21 to 30 of about 759 (184)

Formation conditions of the Lover Kasimovian (Upper Carboniferous) organic buildups on the Ilych River (Northern Urals)

open access: yesGeology of reefs, 2020
Lower Kasimovian organic buildups in the Moleben-Iz section on the Ilych River, Northern Urals, were studied. Two levels of buildups development have been established, that are composing by algal and palaeoaplysinid boundstones and biocementstones. They are probably a part of long (up to 10 km) and complexly constructed biostromes.
E. Ponomarenko
openaire   +2 more sources

Usolka section (southern Urals, Russia): a potential candidate for GSSP to define the base of the Gzhelian Stage in the global chronostratigraphic scale

open access: yesGeologija, 2006
Conodont species Streptognathodus simulator Ellison, 1941 has been proposed recently to define the Kasimovian-Gzhelian boundary in the global chronostratigraphic scale.The species distributed globally and traditionally has been used as a marker of the ...
Valery V. Chernykh   +4 more
doaj   +1 more source

The Late Pennsylvanian vegetation of the Donets Basin, Ukraine: Syntaxonomy of plant communities

open access: yesGeo&Bio, 2023
A reconstruction and classification of Kasimovian and Gzhelian plant communities of the Donets Basin that constituted the Late Pennsylvanian vegetation cover of the region is proposed.
Nataliya Boyarina
doaj   +1 more source

Brachiopod and fusulinid assemblages of Kasimovian (Pennsylvanian) age from the Ándara Massif (Picos de europa, northern Spain)

open access: yes, 2010
The paper is a contribution to the project CGL 2006-04554 of the Spanish Ministerio de Ciencia e ...
Martínez Chacón, M.L.   +2 more
openaire   +3 more sources

First report of silicified wood from a late Pennsylvanian intramontane basin in the Pyrenees: systematic affinities and palaeoecological implications

open access: yesPapers in Palaeontology, Volume 9, Issue 5, September/October 2023., 2023
Abstract The first anatomically preserved wood specimens of an upland Carboniferous flora from the Iberian Peninsula are reported from the Erillcastell Basin (Eastern Pyrenees, Catalonia, Spain). Two taxa are described, a calamitacean Equisetales (Arthropitys sp.) and a Cordaitales (Dadoxylon sp.).
Aixa Tosal   +4 more
wiley   +1 more source

Decoding the drivers of deep‐time wetland biodiversity: insights from an early Permian tropical lake ecosystem

open access: yesPalaeontology, Volume 66, Issue 3, May/June 2023., 2023
Abstract Wetlands are important to continental evolution, providing both arenas and refugia for emerging and declining biotas. This significance and the high preservation potential make the resulting fossiliferous deposits essential for our understanding of past and future biodiversity.
Steffen Trümper   +8 more
wiley   +1 more source

Skeletal and soft tissue completeness of the acanthodian fossil record

open access: yesPalaeontology, Volume 65, Issue 4, July/August 2022., 2022
Abstract Acanthodians are a poorly understood paraphyletic grade of extinct Palaeozoic fishes. They play an increasingly prominent role in our understanding of vertebrate evolution as part of the chondrichthyan stem‐group even though their evolutionary history is scarce. The limited preservation of their mostly cartilaginous skeleton largely results in
Lisa Schnetz   +4 more
wiley   +1 more source

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

open access: yesThe Depositional Record, Volume 7, Issue 2, Page 311-332, June 2021., 2021
The Pisanyi Kamen’ section on the Un'ya River, Northern Urals, from the Lower Asselian stratigraphic interval is the central part of a succession of skeletal mounds that are composed of biocementstones. Palaeoecological analysis allows the pioneer stages of the ecological succession, representing the stabilisation and colonisation stages, to be ...
Evgeniy S. Ponomarenko
wiley   +1 more source

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