Results 41 to 50 of about 10,959 (166)
Late Cretaceous and Danian limestone
Danmarks Geologiske Undersøgelse Serie B, 1982 At the termination of the Early Cretaceous period, the sea transgressed large earlier land areas. The transgression, the reduced relief of the continents, the generally diminished tectonic activity, the climatic change, and the enormous production of calcareous nannoplankton in the oceans profoundly changed the gross facies pattern in the North Sea ...
Kirsten Lieberkind +3 more
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Anatomy of Rhinochelys pulchriceps (Protostegidae) and marine adaptation during the early evolution of chelonioids [PDF]
PeerJ, 2019 Knowledge of the early evolution of sea turtles (Chelonioidea) has been limited by conflicting phylogenetic hypotheses resulting from sparse taxon sampling and a superficial understanding of the morphology of key taxa.
Serjoscha W. Evers +2 more
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Geomagnetic excursion in the late Cretaceous [PDF]
Geophysical Journal International, 1983 Summary. Two sedimentary cores from the western Pacific display a palaeomagnetic record of the late Cretaceous long normal interval and the boundary reversed interval corresponding to seafloor spreading anomalies 33-34. Near the young end of this reversed interval, a systematic excursion of inclinations is observed in both cores.
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Acta Palaeobotanica, 2015 The finding of fossil freshwater diatoms in late Cretaceous chert in Mexico suggests - together with all the discoveries of fossil freshwater diatoms known from positions older than the Cretaceous - that the extinct marine Cretaceous diatom taxa cannot ...
Siemińska Jadwiga
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PLoS ONE, 2014 Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian dinosaurs.
Thomas E Williamson, Stephen L Brusatte
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PLoS ONE, 2014 The fossil record for neoceratopsian (horned) dinosaurs in the Lower Cretaceous of North America primarily comprises isolated teeth and postcrania of limited taxonomic resolution, hampering previous efforts to reconstruct the early evolution of this ...
Andrew A Farke +3 more
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Revista Mexicana de Ciencias Geológicas, 2019 In the Caborca–Altar area of northwest Sonora, variably deformed and metamorphosed sedimentary and volcanic rocks crop out in a northwest-southeast–trending belt (El Batamote belt) at least 70 km long.
Carl E. Jacobson +5 more
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BIOGEOGRAPHIC HISTORIES AND CHRONOLOGIES OF DERIVED IGUANODONTIANS
Publicación Electrónica de la Asociación Paleontológica Argentina, 2015 The geographic distributions, chronology, and phylogenetic relationships of derived iguanodontians describe a biogeographic history of active intercontinental dispersal, which is tested via comparison with eustatic sea level fluctuations.
Jason J. Head, Yoshitsugu Kobayashi
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Frontiers in Earth Science, 2020 Since the initial proposal of the past existence of a southward-directed mid-ocean ridge–subduction interaction in the Andes during Late Cretaceous–Paleogene times, several studies have been devoted to uncover the tectonomagmatic evidence of this process.
Sofía B. Iannelli +15 more
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Journal of Natural Gas Geoscience, 2016 The analysis of hydrocarbon generation, trap formation, inclusion homogenization temperature, authigenic illite dating, and ESR dating were used to understand the history of hydrocarbon accumulation and its difference among gas reservoirs in the Upper ...
Peng Wang +5 more
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