Results 11 to 20 of about 10,959 (166)

Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary. [PDF]

open access: yesPLoS 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

Modeling of Tectonic-Thermal Evolution of Cretaceous Qingshankou Shale in the Changling Sag, Southern Songliao Basin, NE China

open access: yesFrontiers 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

Burial and thermal history simulation of the subsurface Paleozoic source rocks in Faghur basin, north Western Desert, Egypt: Implication for hydrocarbon generation and expulsion history

open access: yesEgyptian 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

Upper Cretaceous-middle Eocene aged olistrostromal pelagic units in the Biga Peninsula (NW Anatolia); Balıkkaya formation

open access: yesBulletin 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

Dawn and dusk of Late Cretaceous basin inversion in central Europe [PDF]

open access: yesSolid 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

Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans. [PDF]

open access: yesPLoS 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

Late Cretaceous Vicariance in Gondwanan Amphibians

open access: yesPLoS 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
openaire   +4 more sources

The origin and early evolution of metatherian mammals: the Cretaceous record

open access: yesZooKeys, 2014
Metatherians, which comprise marsupials and their closest fossil relatives, were one of the most dominant clades of mammals during the Cretaceous and are the most diverse clade of living mammals after Placentalia.
Thomas E. Williamson   +2 more
doaj   +1 more source

Divergence rates of subviral pathogens of angiosperms abruptly decreased at the Cretaceous-Paleogene boundary [PDF]

open access: yesRethinking Ecology, 2019
Biogeographic distribution of infected plants and the continental drift theory allow a tentative time calibration of the phylogenetic tree of Pospiviroidae.
Piotr Bajdek
doaj   +3 more sources

Evidence of mysid swarm behaviour (Crustacea: Malacostraca) from the Cenomanian (Late Cretaceous) of Hakel, Lebanon

open access: yesNatural History Sciences, 2023
A mass mortality assemblage of mysid crustaceans is herein reported from the Cenomanian (Late Cretaceous) sublithographic limestone of Hakel (Lebanon).
Giovanni Pasini, Alessandro Garassino
doaj   +1 more source

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