Articles with "lower cretaceous" as a keyword



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Is Santaniella a ranuculid? Re-assessment of this enigmatic fossil angiosperm from the Lower Cretaceous (Aptian, Crato Konservat-Lagerstätte, Brazil) provides a new interpretation.

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Published in 2023 at "American journal of botany"

DOI: 10.1002/ajb2.16163

Abstract: PREMISE The Lower Cretaceous Crato Konservat-Lagerstätte (CKL) preserves a rich flora including early angiosperms from northern Gondwana. From this area, the recently described fossil genus Santaniella was interpreted as a ranunculid (presumably Ranunculaceae). However, based… read more here.

Keywords: fossil angiosperm; konservat lagerst; lagerst tte; lower cretaceous ... See more keywords
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The central-western Getic Carbonate Platform: Upper Jurassic to Lower Cretaceous biostratigraphy and sedimentary evolution of the Cioclovina–Băniţa sector (Southern Carpathians, Romania)

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Published in 2019 at "Facies"

DOI: 10.1007/s10347-019-0574-3

Abstract: Detailed sedimentological and micropaleontological investigations have been carried out on nine sections from the central-western part of the Southern Carpathians (Cioclovina-Băniţa sector) that provide new insights into the Upper Jurassic–Lower Cretaceous biostratigraphy and sedimentary successions… read more here.

Keywords: jurassic lower; upper jurassic; lower cretaceous; platform ... See more keywords
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A New Eobaatarid Multituberculate (Mammalia) from the Lower Cretaceous Fuxin Formation, Fuxin-Jinzhou Basin, Liaoning, Northeastern China

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Published in 2019 at "Journal of Mammalian Evolution"

DOI: 10.1007/s10914-019-09481-w

Abstract: Five multituberculate species have been reported to date from the upper Lower Cretaceous (Aptian–Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China. We herein describe an additional species of eobaatarid multituberculate from the Fuxin… read more here.

Keywords: lower cretaceous; fuxin formation; northeastern china; eobaatarid multituberculate ... See more keywords
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Structure, kinematics and composition of fluid-controlled brittle faults and veins in Lower Cretaceous claystones (Lower Saxony Basin, Northern Germany): Constraints from petrographic studies, microfabrics, stable isotopes and biomarker analyses

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Published in 2020 at "Chemical Geology"

DOI: 10.1016/j.chemgeo.2020.119501

Abstract: Abstract Investigation of fault rocks is crucial for the evaluation of sealing properties of rock formations considered as oil and gas storage or for the disposal of heat-generating radioactive waste. Even in tight rock formations,… read more here.

Keywords: lower saxony; fault; brittle faults; biomarker ... See more keywords
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Palynological and organic geochemical studies of the Upper Jurassic-Lower Cretaceous successions, Western Desert, Egypt: Implications for paleoenvironment and hydrocarbon source rock potential

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Published in 2019 at "International Journal of Coal Geology"

DOI: 10.1016/j.coal.2019.05.014

Abstract: Abstract The Upper Jurassic-Lower Cretaceous successions in the north Western Desert of Egypt are one of the most prolific hydrocarbon plays in North Africa. However, the source rock characteristics and depositional environments are still poorly… read more here.

Keywords: lower cretaceous; source; upper jurassic; source rock ... See more keywords
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Organic matter characterization of the Lower Cretaceous tight reservoirs in the Danish North Sea

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Published in 2021 at "International Journal of Coal Geology"

DOI: 10.1016/j.coal.2021.103714

Abstract: Abstract This paper presents the first detailed organic geochemistry and petrography of the Lower Cretaceous tight reservoir units from the Valdemar Field, Danish Central Graben. The Tuxen and Sola formation chalks and the interbedded argillaceous… read more here.

Keywords: organic matter; cretaceous tight; characterization lower; solid bitumen ... See more keywords
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Biostratigraphic implication of Olcostephanus Neumayr, 1875 (Ammonoidea) from the Lower Cretaceous Giumal Formation, Spiti Valley, Tethys Himalaya, India

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Published in 2017 at "Cretaceous Research"

DOI: 10.1016/j.cretres.2016.10.013

Abstract: The paper records new species of the ammonoid genus Olcostephanus Neumayr from the Lower Cretaceous Giumal Formation exposed near Gete village in the Spiti Valley (Himachal Himalaya), India. Olcostephanus is one of the most significant… read more here.

Keywords: cretaceous giumal; lower cretaceous; himalaya india; spiti valley ... See more keywords
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New and little known species from the genus Leptotarsus Guerin-Meneville, 1831 (Diptera: Tipulidae) from the Lower Cretaceous of Northern Brazil

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Published in 2017 at "Cretaceous Research"

DOI: 10.1016/j.cretres.2017.05.032

Abstract: Abstract The paper presents the description of a new fossil species Leptotarsus ( sensu lato ) ribeiroi sp. nov. (Diptera, Tipulidae), and additional descriptions from some known species of this genus. The key to the… read more here.

Keywords: lower cretaceous; known species; diptera tipulidae; species genus ... See more keywords
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Nereites in Lower Cretaceous marginal-marine facies from Patagonia: Ichnotaxonomic and ethological implications

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Published in 2018 at "Cretaceous Research"

DOI: 10.1016/j.cretres.2017.09.002

Abstract: Abstract Detailed descriptions of Nereites are uncommon. In this work, Nereites are thoroughly described from tidally influenced and wave dominated deposits in the Cretaceous of the Neuquen Basin (northern Patagonia). These Nereites show a great… read more here.

Keywords: marginal marine; cretaceous marginal; lower cretaceous; facies patagonia ... See more keywords
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First record of elasmobranchs from the Lower Cretaceous of Argentina (Neuquén Basin)

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Published in 2018 at "Cretaceous Research"

DOI: 10.1016/j.cretres.2017.09.003

Abstract: Abstract The material reported herein comes from the Lower Cretaceous Agrio Formation (Neuquen Basin, west-central Argentina). These fishes dwelled in a Pacific Ocean embayment in southwestern Gondwana before the establishment of the Andean Cordillera. The… read more here.

Keywords: cretaceous argentina; lower cretaceous; record elasmobranchs; elasmobranchs lower ... See more keywords
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The oldest ‘Megapodagrionidae’ (Odonata, Zygoptera) discovered in the Lower Cretaceous Yixian Formation, China

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Published in 2018 at "Cretaceous Research"

DOI: 10.1016/j.cretres.2017.12.003

Abstract: Abstract Cretapodagrion sibelleae gen. et sp. nov., oldest representative and first Mesozoic ‘Megapodagrionidae’, is described on the basis of a complete wing from the Lower Cretaceous of Yixian Formation (ca. 124.6 Ma) in China. It shows… read more here.

Keywords: megapodagrionidae; cretaceous yixian; lower cretaceous; yixian formation ... See more keywords