Results 41 to 50 of about 843 (161)

Lower Aptian ammonite biostratigraphy in the Maestrat Basin (Eastern Iberian Chain, Eastern Spain). A Tethyan transgressive record enhanced by synrift subsidence

open access: yesGeologica Acta, 2010
The present paper analyses the stratigraphic distribution of ammonites collected in the Lower Aptian sediments of the Maestrat Basin (E Spain). The faunal successions obtained from the systematic sampling of ten selected sections located in several sub ...
J.A. MORENO BEDMAR   +7 more
doaj  

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

open access: yesThe Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

open access: yesThe Anatomical Record, Volume 309, Issue 8, Page 1995-2048, August 2026.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

Aptian ammonites of Abu Dhabi (United Arab Emirates) [Ammonites aptiennes d'Abou Dabi (Émirats Arabes Unis)]

open access: yesCarnets de Géologie, 2011
The identification of some twenty ammonite fragments from oil wells drilled in offshore Abu Dhabi revealed the presence of six Aptian genera: Cheloniceras, Epicheloniceras, Gargasiceras, Colombiceras, Pseudohaploceras, and Macroscaphites. These ammonites
Robert Busnardo, Bruno Granier
doaj  

Biostratigraphic correlation of the western and eastern margins of the Labrador–Baffin Seaway and implications for the regional geology. Appendix 3 [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2016
New analyses of the palynological assemblages in 13 offshore wells on the Canadian margin and six on the West Greenland Margin, in conjunction with onshore data, have led to a new biostratigraphic framework for the Cretaceous–Cenozoic strata of the ...
Henrik Nøhr-Hansen   +2 more
doaj  

Exhumed eo‐Alpine High‐Pressure Rocks Fed Campanian Turbidites in Eastern Sardinia

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study investigates the detrital record of the early orogenic evolution of the Sardinia‐Calabria system, preserved in Upper Cretaceous arenites exposed in eastern Sardinia. Sardinia and Corsica form a continental block that includes a segment of the Alpine orogen and of its former foreland basin.
Francesco Massari   +5 more
wiley   +1 more source

Les Phylloceratoidea (Ammonoidea) aptiens et albiens du bassin vocontien (Sud-Est de la France) [Aptian and Albian Phylloceratids (Ammonoidea) from the Vocontian Basin (SE France)]

open access: yesCarnets de Géologie, 2008
More than 2,200 pyritized ammonites of the Superfamily Phylloceratatoidea have been collected in consonance with the scale of the ammonite zonation of the expanded Marnes Bleues Fm in the Vocontian Basin (SE France).
Joly Bernard, Delamette Michel
doaj  

Longevity and Reactivation of Intracontinental Walled Basins: Thermochronologic Evidence From Western Mongolia

open access: yesBasin Research, Volume 38, Issue 4, July–August 2026.
Permian–Jurassic tectonism produced cooling ages preserved in Mesozoic strata of the Dzereg and Dariv basins. Thermal modeling indicates mid‐Cretaceous and late Cenozoic basin inversion and cooling synchronous with bounding‐range exhumation, supporting a long‐lived source‐to‐sink relationship and persistent inherited relief since the Jurassic ...
Eli VanDyke   +3 more
wiley   +1 more source

Palynology and paleoecology of Sarcheshmeh and Sanganeh formations at Baghak section (east of Kopeh-Dagh)

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2014
1-Introduction The Kopeh-Dagh as an inverted basin (Allen et al. 2003) is extended from the east of the Caspian Sea to NE Iran, north Afghanistan and Turkmenistan.
Mahjooneh Keshmiri   +4 more
doaj  

Extroparvum occidentale gen. et sp. nov. and the Cretaceous diversification of Lauraceae

open access: yesAmerican Journal of Botany, Volume 113, Issue 7, July 2026.
Abstract Premise The fossil record of Lauraceae extends back to the Early Cretaceous and comprises numerous flowers. However, phylogenetic relationships of many of these fossil flowers remain unresolved. To better understand the early evolutionary history of Lauraceae, we conducted phylogenetic analyses of living and extinct members of the family and ...
Keana K. Tang   +2 more
wiley   +1 more source

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