Results 51 to 60 of about 13,318 (257)
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract The northern extent of Greater India is a critical, yet highly debated, parameter for reconstructing the India‐Asia collision. Previous paleomagnetic estimates, including the fill‐the‐gap and fixed great circle approaches, yield widely varying results, spanning from ∼200 to ∼3,000 km. These large discrepancies stem principally from two primary
Xianwei Jiao +3 more
wiley +1 more source
Geological Magazine, 1920 It is well known that the chambers of Cephalopod shells are connected by an organ called the siphuncle, which passes through the septa by the septal necks. Many investigators who have studied these shells have made careful observations on the siphuncle, hoping thereby to throw light on its functions.
openaire +2 more sources
, 2023 International audienceThe generalized ‘laws’ of intraspecific variability in ammonites are used as a predictive tool to define the limits of poorly known species of the early Heteroceratidae (Lazariniceras, heteromorph ammonites), based on the ...
Bersac, Stéphane +7 more
core +1 more source
Uppermost Albian biostratigraphy and chronostratigraphy
Carnets de Géologie, 2009 The Albian Stage is the highest chronostratigraphic unit of the Lower Cretaceous Series and underlies the Cenomanian Stage of the Upper Cretaceous Series.
Scott Robert W.
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The Jurassic of North-East Greenland: Jurassic dinoflagellate cysts from Hochstetter Forland, North-East Greenland [PDF]
Geological Survey of Denmark and Greenland Bulletin, 2004 Three sections in Hochstetter Forland, North-East Greenland, referred to the Jurassic Payer Dal and Bernbjerg Formations, have been analysed for dinoflagellate cysts.
Piasecki, Stefan, Stemmerik, Lars
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Sutural simplification in Physodoceratinae (Aspidoceratidae, Ammonitina)
Estudios Geologicos, 1987 El análisis estructural de la interrelación concha-septo en algunos ammonites del Jurásico superior lleva a concluir que las simplificaciones suturales aparecidas a lo largo de la filogenia fueron originadas por alteraciones ocurridas en la morfología ...
A. Checa
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A Shallow‐Marine Ecosystem Before Initial Tibetan Plateau Uplift
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract The uplift of the Tibetan Plateau profoundly influences global atmospheric circulation, sediment transport, and biodiversity, but its pre‐uplift marine paleoenvironment remains poorly understood. Here we report the first discovery of an in situ benthic fossil assemblage from the Puga area in central Tibet, which was deposited on a shallow ...
Ming Wang +12 more
wiley +1 more source
The last Maastrichtian ammonites from the Brazos River sections in Falls County, Texas
, 2016 The uppermost 11 m of the upper Upper Maastrichtian Corsicana Formation in the Brazos River sections in Falls County, Texas, yields abundant ammonites.
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Paléopathologie des ammonites — Historique et exemples pris dans le Toarcien et l'Aalénien (Jurassique) de la Région lyonnaise (France) [PDF]
, 2015 Palaeopathology of the Ammonites. Historic review and new data from the Jurassic (Toarcian, Aalenian) of the mLyon's area. From the beginning of the XIXth century, paleontologists noticed that certain ammonites show surprising morphological ...
Rulleau, Louis
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Carnets de Géologie, 2008 • Chapter 1. The Aalenian-Bajocian (Middle Jurassic) of the Digne area • Chapter 2. The Global Boundary Stratotype Sections and Points (GSSP) of the Hauterivian: La Charce section (Drôme, France, Vocontian Basin) • Chapter 3.
Mattioli Emanuela +5 more
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