Results 21 to 30 of about 1,708,794 (291)
Evidence for global cooling in the Late Cretaceous [PDF]
Nature Communications, 2014 AbstractThe Late Cretaceous ‘greenhouse’ world witnessed a transition from one of the warmest climates of the past 140 million years to cooler conditions, yet still without significant continental ice. Low-latitude sea surface temperature (SST) records are a vital piece of evidence required to unravel the cause of Late Cretaceous cooling, but high ...
C. Linnert +9 more
openaire +8 more sources
Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. [PDF]
PLoS Biology, 2018 Pterosaurs were the first vertebrates to evolve powered flight and the largest animals to ever take wing. The pterosaurs persisted for over 150 million years before disappearing at the end of the Cretaceous, but the patterns of and processes driving ...
Nicholas R Longrich +2 more
doaj +1 more source
Frontiers in Earth Science, 2021 A series of significant shale oil discoveries have been made recently in the Upper Cretaceous Qingshankou Formation in the Songliao Basin, providing a new resource target for shale oil exploration in Northeast China.
Yuchen Liu +11 more
doaj +1 more source
Egyptian Journal of Petroleum, 2019 Paleozoic Zeitoun, Desouqy and Dhiffah formations represent source rocks to hydrocarbon in Faghur basin, north Western Desert, Egypt. They are characterized by a sufficient amount of organic matter belonging to kerogen type III and mixed type II/III ...
Esam A. Abd El Gawad +5 more
doaj +1 more source
Bulletin of the Mineral Research and Exploration, 2021 Balıkkaya formation consists of olistostromal units with a burgundy coloured mudstone, siltstone and pelagic limestone matrix containing various sizes of UpperJurassic-Lower Cretaceous limestone (Bilecik Limestone) blocks and ...
İzver Özkar Öngen, Serdar Akgündüz
doaj +1 more source
Osteology and relationships of Rhinopycnodus gabriellae gen. et sp. nov. (Pycnodontiformes) from the marine Late Cretaceous of Lebanon [PDF]
, 2013 The osteology of Rhinopycnodus gabriellae gen. and sp. nov., a pycnodontiform fish from the marine Cenomanian (Late Cretaceous) of Lebanon, is studied in detail.
Taverne, Louis +4 more
core +1 more source
Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans. [PDF]
PLoS ONE, 2013 The Late Cretaceous (∼95-66 million years ago) western North American landmass of Laramidia displayed heightened non-marine vertebrate diversity and intracontinental regionalism relative to other latest Cretaceous Laurasian ecosystems.
Mark A Loewen +4 more
doaj +1 more source
Dawn and dusk of Late Cretaceous basin inversion in central Europe [PDF]
Solid Earth, 2021 Central and western Europe were affected by a compressional tectonic event in the Late Cretaceous, caused by the convergence of Iberia and Europe. Basement uplifts, inverted graben structures, and newly formed marginal troughs are the main expressions of
T. Voigt, J. Kley, S. Voigt
doaj +1 more source
Late Cretaceous Vicariance in Gondwanan Amphibians
PLoS ONE, 2006 Overseas dispersals are often invoked when Southern Hemisphere terrestrial and freshwater organism phylogenies do not fit the sequence or timing of Gondwana fragmentation. We used dispersal-vicariance analyses and molecular timetrees to show that two species-rich frog groups, Microhylidae and Natatanura, display congruent patterns of spatial and ...
Van Bocxlaer, Ines +4 more
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Late Cretaceous Gravitational Collapse of the Southern Sierra Nevada Batholith and Adjacent Areas Above Underplated Schists, Southern California [PDF]
, 2012 The greater Sierra Nevada batholith (SNB) is an ~ 600 km long NNW-trending composite arc assemblage consisting of a myriad of plutons exhibiting a distinct transverse zonation in structural, petrologic, geochronologic, and isotopic patterns.
Chapman, Alan Daniel
core +1 more source