Results 21 to 30 of about 2,451 (206)

Paleoenvironments of Berriasian–lower Hauterivian deposits in the Western Neotethys: Late development, demise and drowning of the Slivnitsa carbonate platform (Western Bulgaria)

open access: yesEvolving Earth
Sedimentological and biostratigraphic results are used to interpret the Early Cretaceous history of the newly named Slivnitsa carbonate platform which existed on the northern Neotethyan margin.
Athanas Chatalov, Daria Ivanova
doaj   +2 more sources

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

open access: yesThe Depositional Record
Relative sea‐level change, climate variability and sediment supply exert a first‐order control on the architecture of mixed carbonate–siliciclastic shelves, yet their combined expression in fine‐grained successions with low facies diversity remains ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
doaj   +2 more sources

A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil [PDF]

open access: yesScientific Reports, 2021
Fossil microeukaryotes are key elements for understanding ancient ecosystems at microscopic level and improving the knowledge on the diversification of microbial life as a whole. We describe Palaeohypothrix bahiensis gen. et sp.
Thiago da Silva Paiva   +1 more
doaj   +2 more sources

Biostratigraphy and magnetostratigraphy of the upper Tithonian–Berriasian of the Crimean Mountains [PDF]

open access: yesCretaceous Research, 2018
Abstract Our data from studies over many years on upper Tithonian–Berriasian strata of the Crimean Mountains are summarised. Their zonal subdivision has been significantly refined using ammonites and foraminifera, as well as on the basis of calpionellid, ostracod and dinocyst distributions.
Vladimir Arkadiev   +7 more
openaire   +2 more sources

Recurrent volcanic activity recorded in araucarian wood from the Lower Cretaceous Springhill Formation, Patagonia, Argentina: Palaeoenvironmental interpretations [PDF]

open access: yesActa Palaeontologica Polonica, 2021
This paper describes a petrified trunk collected from a conglomerate bed of the Springhill Formation (Berriasian–Valanginian) in the Estancia El Álamo locality, Santa Cruz Province, Argentina.
Georgina M. Del Fueyo   +3 more
doaj   +1 more source

Endocranial anatomy of the earliest Cretaceous European neosuchian crocodyliform Pholidosaurus purbeckensis provides new evidence for the ecological evolution of Pholidosauridae. [PDF]

open access: yesJ Anat
We present new insights into the internal cranial anatomy of the neosuchian crocodyliform Pholidosaurus purbeckensis, based on CT‐scan data of material from the lowermost Cretaceous Purbeck Limestone Group, southern UK. From the study of the endocast, we obtained new information on the phylogeny and the ecological evolution of the Family ...
Barbini L   +4 more
europepmc   +2 more sources

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin). [PDF]

open access: yesAnat Rec (Hoboken)
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
de Souza Ribeiro L, de França MAG.
europepmc   +2 more sources

Preliminary Appraisal of a Correlation Between Glaciations and Large Igneous Provinces Over the Past 720 Million Years

open access: yesGeophysical Monograph Series, Page 169-190., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi   +9 more
wiley  

+1 more source

Formation and structure of regional reservoirs of the Achimov petroleum bearing strata of the Gydan Peninsula [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
The main prospects for hydrocarbon accumulations search in the Berriasian-Lower Aptian strata of the Gydan Peninsula are associated with the Achimov petroleum bearing strata. The features of its structure and conditions of formation are considered.
Bardachevskiy V.N.
doaj   +1 more source

Two look-alike dasycladalean algae: Clypeina isabellae masse, Bucur, Virgone & Delmasso, 1999 from the Berriasian of Sardinia (Italy) and Clypeina loferensis sp. N. from the upper Jurassic of the Northern Calcareous Alps (Austria) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2009
New material from the Berriasian of eastern Sardinia, Italy, and from the NW of Sardinia published by PECORINI in 1972 as 'Clypeina sp. A', allows a better characterization and an emended diagnosis of Clypeina isabellae MASSE et al., 1999 from the ...
Schlagintweit Felix   +2 more
doaj   +1 more source

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