Results 21 to 30 of about 684 (81)

Micropalaeontology, biostratigraphy, and depositional setting of the mid-Cretaceous Derdere Formation at Derik, Mardin, south-eastern Turkey [PDF]

open access: yesJournal of Micropalaeontology, 2020
The micropalaeontology of the mid-Cretaceous Derdere Formation (Mardin Group) from outcrops close to the town of Derik in south-eastern Turkey is described here.
M. D. Simmons   +6 more
doaj   +1 more source

The Albian-Cenomanian boudary in the northern part of the Don-Medveditsa dislocations. Paper 2. Oryctocoenoses analysis. Conclusions [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
Ammonite finds at the Miroshniki site, within the Albian-Cenomanian boundary interval, make it possible to identify the presence of the analogues of the Upper Albian zones Mortoniceras fallax (autochthonous burial within aleurolites) and Mortoniceras ...
Pervushov, Evgeniy Mikhaylovich   +3 more
doaj   +1 more source

Taxonomy of Platypterygius campylodon and the diversity of the last ichthyosaurs [PDF]

open access: yesPeerJ, 2016
A complex and confusing taxonomy has concealed the diversity dynamics of Cretaceous ichthyosaurs (Reptilia) for decades. The near totality of Albian-Cenomanian remains from Eurasia has been assigned, by default, to the loosely defined entity ...
Valentin Fischer
doaj   +2 more sources

Comparison of the Porosity Parameter in Sediments Obtained Using Traditional and Precision Methods (Cenomanian Deposits in Western Siberia, Russia)

open access: yesQubahan Academic Journal, 2023
The study focuses on porosity, an important parameter for calculating reserves. Traditionally, weight-based methods are used in calculation, which implies a simple approach to estimating hydrocarbon reserves.
Vitaliya Naumenko   +2 more
doaj   +1 more source

LE RELAZIONI TRA LE ARENARIE DI SARNICO (CONIACIANO) E LE UNITA' CENOMANIANO-TURONIANE NELL'AREA DI CAPRIOLO - CORNO PENDITA (BS) (BACINO LOMBARDO, ALPI MERIDIONALI)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
The Cenomanian-Coniacian units of the Capriolo - Corno Pendita area belong to the eastern margin of the Lombardy Basin. The Coniacian turbidite sandstone lithosome (Arenarie di Sarnico) unconformably overlies the Cenomanian-Turonian units.
R. BERSEZIO, L. MENSINI
doaj   +1 more source

On the Cretaceous mangroves of Bahariya Oasis, Egypt [PDF]

open access: yesTaeckholmia, 2016
Petrified stems (rhizomes) of a fern are described from Late Cretaceous (Cenomanian)beds in Bahariya Oasis. The discovered stems are related to Paradoxopteris stromeriHirmer (fern rachii) and to Weichselia reticulata Stokes & Webb.
Marwah Kamal-El-Din   +4 more
doaj   +1 more source

Carbon Isotopic Signature and Organic Matter Composition of Cenomanian High-Latitude Paleosols of Southern Patagonia

open access: yesGeosciences, 2021
The Cenomanian Mata Amarilla Formation (MAF) in southern Patagonia (~55° S paleolatitude, Austral-Magallanes Basin, Argentina) is composed mainly of stacked fluvial deposits with intercalated paleosols, which document Cenomanian environments at high ...
Augusto Nicolás Varela   +5 more
doaj   +1 more source

Stripping back the modern to reveal the Cenomanian–Turonian climate and temperature gradient underneath [PDF]

open access: yesClimate of the Past, 2020
During past geological times, the Earth experienced several intervals of global warmth, but their driving factors remain equivocal. A careful appraisal of the main processes controlling past warm events is essential to inform future climates and ...
M. Laugié   +6 more
doaj   +1 more source

The first record of Scheenstia (Actinopterygii, Holostei) from the Late Cretaceous of Ukraine in the context of European occurrence of Mesozoic lepisosteiform fishes

open access: yesGeo&Bio, 2019
Lepisosteiform fishes are represented in the fossil record of Europe from the Late Jurassic until the Miocene. Most of their remains were found in the western and central parts of the continent.
L. S. Kyselevych, O. M. Kovalchuk
doaj   +1 more source

Larger Foraminifera of Middle and Late Cenomanian (Biostrome Association), Southern Iraq

open access: yesIraqi Geological Journal, 2023
Searching one of the most important reservoirs of the Cretaceous in Iraq is the aim of many researchers. The studied sequences are in the Mishrif Formation in southern Iraq. The goal is to define fauna and design biostratigraphic zoning.
Abdelwahhab Al-Salihi, Yasamin Ibrahim
doaj   +1 more source

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