نتایج جستجو برای: berriasian valanginian

تعداد نتایج: 197  

Journal: :Papers in palaeontology 2022

The first occurrence of the belemnite species Liobelus acrei (formerly Acroteuthis acrei) is reported from Lower Cretaceous (Valanginian) Vocontian Basin (VB; south-east France). This record genus (Family Cylindroteuthididae), which commonly attributed to latest Jurassic and Early Boreal Realm, revises spatial distribution pattern boreal belemnites significantly. Valanginian assemblages VB are ...

2003
STUART A. ROBINSON STEPHEN P. HESSELBO

Fossil-wood carbon-isotope data are presented for the Wessex Formation, a non-marine unit within the Lower Cretaceous (Valanginian–Barremian) Wealden Group of the Isle of Wight and Dorset, southern England. The carbon-isotope values have a range ( C c. 26.6 to 19.8‰) that is consistent with that expected for Mesozoic C3 plants. Consideration of the Isle of Wight fossil-wood carbon-isotope data ...

2009
GARETH J. DYKE MICHAEL J. BENTON DARREN NAISH

We revisit a small but extremely significant collection of bird and pterosaur bones from the Lower Cretaceous (Berriasian) of western Romania. These fossils were collected in the late 1970s and early 1980s from a Lower Cretaceous (Berriasian) conglomerate lens deep in a bauxite mine at Cornet, close to the city of Oradea, Romania, and they caused a sensation when first described. Some fossils w...

Journal: :Frontiers in Earth Science 2023

High-amplitude changes in sedimentary δ 13 C characterize the Cretaceous system and have been proven useful for supra-regional chemostratigraphic correlation. In Cretaceous, these perturbations indicate large shifts between global carbon reservoirs that are usually caused by volcanic activity of igneous provinces, widespread deposition thick organic carbon-rich sequences and/or orbital paramete...

Journal: :Basin Research 2022

Abstract The structure and tectonic evolution of the Cretaceous rift basins southern Egypt are poorly understood. In this study, tectonostratigraphy Komombo Basin has been determined using seismic, well biostratigraphic data. basin is compared to Kharit, Nuqra Beni Suef in as Muglad Sudan. a 58 km long, 28 wide NW–SE trending half‐graben infilled with 2200 m Berriasian‐Maastrichtian sediments o...

Journal: :Carnets de géologie (Notebooks on geology) 2018

Journal: :Bulletin of the Serbian Geographical Society 2007

Journal: :Acta Geologica Polonica 2023

Jurassic and Lower Cretaceous successions of the Manin Unit Central Western Carpathians are exposed in Butkov Quarry Middle Vah Region, Slovakia. A significant part macrofauna belonging to neocomitid ammonites, formerly classified under genus Teschenites Thieuloy, 1971, occurs deposits spanning Valanginian/Hauterivian boundary. The original definition was accompanied by uncertainties taxonomic ...

2007
Ann E. L. Holbourn Michael A. Kaminski

A Valanginian to Barremian bathyal foraminiferal assemblage (118 taxa belonging to 51 genera) is documented from ODP Site 766, drilled near the foot of the Exmouth Plateau off northwest Australia. The majority of taxa are cosmopolitan species previously described from the boreal assemblages of northern Europe and the northern margins of the Tethys, but 32 taxa could not be assigned to previousl...

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