Results 61 to 70 of about 506 (180)

Osteology and Taxonomy of British Wealden Supergroup (Berriasian–aptian) Ankylosaurs (Ornithischia, Ankylosauria)

open access: yesJournal of Vertebrate Paleontology, 2020
Ankylosaurs, dinosaurs possessing extensive body armor, were significant components of terrestrial ecosystems from the Middle Jurassic–latest Cretaceous. They diversified during the Early Cretaceous, becoming globally widespread. The Lower Cretaceous Wealden Supergroup (Berriasian–Aptian) of Britain has produced abundant ankylosaur material, with three
Thomas J. Raven   +3 more
openaire   +1 more source

Testing Volcano Deformation Models Against 3D Seismic Reflection Imagery of Ancient Intrusions

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Magma intrusion often drives uplift of the overburden and free surface. Analytical modeling of such surface uplift at active volcanoes allows us to estimate intrusion geometries and positions, as well as volume and pressure changes; these insights have proven critical to forecasting volcanic unrest and eruptions. However, it is rarely possible
C. Magee, S. K. Ebmeier, J. Hickey
wiley   +1 more source

CRETACEOUS PALYNOLOGY (SPORES, POLLEN AND DINOFLAGELLATE CYSTS) OF THE SIQEIFA 1-X BOREHOLE, NORTHERN EGYPT

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2007
Diverse and well preserved palynofloras were recognized in the Lower Cretaceous succession penetrated by well Siqeifa 1-X in northern Egypt. Dinoflagellate cysts such as Subtilisphaera senegalensis was regarded, with the spores Impardecispora ...
MAGDY S. MAHMOUD, AMR S. DEAF
doaj   +1 more source

Paleoenvironmental evolution of the southern Neuquèn basin (Argentina) during the Tithonian-Berriasian (Vaca Muerta and Picún Leufú Formations): a multi-proxy approach

open access: yesBSGF - Earth Sciences Bulletin, 2017
The Tithonian-Berriasian interval in the southern part of the Neuquén Basin is represented by the Vaca Muerta and the Picún Leufú Formations. Facies analysis and correlation of the Vaca Muerta Formation and the lower part of the Picún Leufú Formation in ...
Krim Nesma   +8 more
doaj   +1 more source

The Jurassic/Cretaceous boundary and high resolution biostratigraphy of the pelagic sequences of the kurovice section (Outer Western Carpathians, the northern Tethyan margin)

open access: yesGeologica Carpathica, 2019
Microfacies and high resolution studies at the Kurovice quarry (Czech Republic, Outer Western Carpathians) on calpionellids, calcareous and non-calcareous dinoflagellate cysts, sporomorphs and calcareous nannofossils, aligned with paleomagnetism, allow ...
Svobodová Andrea   +6 more
doaj   +1 more source

A new species of Andiceras Krantz (Cephalopoda: Ammonoidea) from the Late Jurassic-Early Cretaceous of the Neuquén Basin, Mendoza, Argentina: Systematics and Biostratigraphy Una nueva especie de Andiceras Krantz (Cephalopoda: Ammonoidea) del Jurásico Tardío-Cretácico Temprano de la Cuenca Neuquina, Mendoza, Argentina: Sistemática y bioestratigrafía

open access: yesAndean Geology, 2012
A new ammonoid species of the Andean endemic genus Andiceras Krantz is here described from upper Tithonian-lower Berriasian levels of the Vaca Muerta and Chachao Formations of the Mendoza Group, in north-western Mendoza Province, Argentina.
Verónica V Vennari   +2 more
doaj  

Early Cretaceous Radiolarians from southernmost Patagonia, Argentina Radiolarios del Cretácico Temprano de la Patagonia Austral, Argentina

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2009
A radiolarian assemblage found in the lowermost strata of the Río Mayer Formation, as exposed at Estancia La Federica in Santa Cruz Province, Argentina, is described.
Chris Hollis   +2 more
doaj  

New nephropid and glypheid lobsters from the Mesozoic of Japan

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
A new nephropid lobster, Hoploparia kamimurai new species is described from the Lower Cretaceous Ishido Formation (Barremian), Gunma Prefecture, central Japan. Two species of glypheid lobsters, Glyphea yoshiakii new species and Glyphea sp. were obtained
Hisayoshi Kato, Hiroaki Karasawa
doaj  

GEOHISTORY ANALYSIS AND BASIN DEVELOPMENT OF THE LATE BERRIASIAN-APTIAN SUCCESSION, SOUTHERN IRAQ

open access: yesIraqi Geological Journal, 2019
The studied succession is deposited during late Berriasian-Aptian interval, which is represented by the Zubair, Ratawi, Yamama formations. The present study includes stratigraphic development and basin analysis for 21 boreholes (Rachi-1, 2 ...
Aiad A.H. Al-Zaidy   +1 more
doaj   +1 more source

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