Results 31 to 40 of about 23,241 (210)

UPPER CRETACEOUS-OLIGOCENE TETHYAN AGGLUTINATED BENTHIC FORAMINIFERAL SPECIES OF THE GENUS ARENOBULIMINA [PDF]

open access: yesGeological Behavior, 2023
The agglutinated test of the genus Arenobulimina has trochospirally enrolled, four or more chambers per whorl, aperture interiomarginal with a simple arch or loop, which has a comprising various species.
Haidar Salim Anan
doaj   +1 more source

Porcupines, Paleogeography, and Parallelism [PDF]

open access: yesEvolution, 1950
One of the vexing problems of geographic distribution is the explanation of why one suborder of rodents, the Hystricomorpha, is characteristic of South America, the southern parts of Eurasia, and Africa, but does not seem ever to have been present in North America until very recent times.
openaire   +1 more source

THE STUDY OF LAKE ONEGO AND ITS DRAINAGE BASIN PALEOGEOGRAPHY USING A SET OF METHODS

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
The authors own and literary data on long-term paleogeographical research of Lake Onego and its drainage basin carried out using a set of methods are summarized in the article.
Lyudmila Filimonova, Nadezhda Lavrova
doaj   +1 more source

Climate simulation of the latest Permian: Implications for mass extinction [PDF]

open access: yes, 2005
This report presents the results of climate modeling research which indicates that elevated levels of carbon dioxide in the atmosphere at the end of the Permian period led to climatic conditions inhospitable to both marine and terrestrial life.
Benton   +22 more
core   +1 more source

Geology and Jurassic paleogeography of the Mt. Primo-Mt. Castel Santa Maria ridge and neighbouring areas (Northern Apennines, Italy) [PDF]

open access: yes, 2014
This paper presents the results of a geological mapping project across the Mt. Primo ridge and neighbouring areas (Umbria-Marche Domain – Northern Apennines), where a thick Meso-Cenozoic carbonate succession is exposed.
Fabbi, Simone
core   +2 more sources

The Glacier Complexes of the Mountain Massifs of the North-West of Inner Asia and their Dynamics [PDF]

open access: yes, 2011
The subject of this paper is the glaciation of the mountain massifs Mongun-Taiga, Tavan-Boghd-Ola, Turgeni- Nuru, and Harhira-Nuru. The glaciation is represented mostly by small forms that sometimes form a single complex of domeshaped peaks ...
Chistyakov , Kirill V.   +3 more
core   +2 more sources

Identification of Erosional Terraces on Seamounts: Implications for Interisland Connectivity and Subsidence in the Galápagos Archipelago

open access: yesFrontiers in Earth Science, 2018
Shallow seamounts at ocean island hotspots and in other settings may record emergence histories in the form of submarine erosional terraces. Exposure histories are valuable for constraining paleo-elevations and sea levels in the absence of more ...
Darin M. Schwartz   +3 more
doaj   +1 more source

Molecular and fossil evidence place the origin of cichlid fishes long after Gondwanan rifting. [PDF]

open access: yes, 2013
Cichlid fishes are a key model system in the study of adaptive radiation, speciation and evolutionary developmental biology. More than 1600 cichlid species inhabit freshwater and marginal marine environments across several southern landmasses.
Alex Dornburg   +9 more
core   +1 more source

PALEONTOLOGY AND PALEOGEOGRAPHY OF FORTY DIAGNOSTIC SOUTHERN TETHYAN CRETACEOUS-PALEOGENE GLOBIGERINID PLANKTIC FORAMINIFERA [PDF]

open access: yesActa Scientifica Malaysia
Forty planktic foraminiferal species were erected from ten localities in the Southern Tethys: Tunisia, Egypt, Angola, Tanzania, Iraq, Kuwait, UAE, Iran, Pakistan, and India.
Haidar Salim Anan
doaj   +1 more source

Late Devonian (Frasnian–Famennian) palynomorphs from the Padeha and Bahram Formations of Shahzadeh Mohammad section, northwest of Kerman, Iran

open access: yesActa Palaeobotanica, 2022
A diverse and well-preserved microphytoplankton assemblage is reported from a measured section of Frasnian–Famennian (Upper Devonian) Padeha and Bahram Formations in Shahzadeh Mohammad area, northwestern Kerman, southeast Iran. The palynoflora assemblage
Roghayeh Rouzegar, Péter Ozsvárt
doaj   +1 more source

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