Results 1 to 10 of about 6,571 (197)

Tropical Forest and Coral Sea of the Beigua Geopark (Liguria, NW Italy) [PDF]

open access: yesGeoconservation Research, 2021
Some of the most interesting paleontological heritage of the Liguria Region is in the Beigua UNESCO Global Geopark, in Savona Province. The Geopark is characterized by high geodiversity and strong tourist traffic, being easily accessible and already ...
Maria Cristina Bonci   +5 more
doaj   +1 more source

First aphidiine wasp from the Sakhalinian amber [PDF]

open access: yesActa Palaeontologica Polonica, 2021
The first ichneumonoid aphidiine wasp species from Sakhalinian amber (middle Eocene) is described. Ephedrus rasnitsyni Davidian and Kaliuzhna sp. nov.
Elena M. Davidian   +2 more
doaj   +1 more source

A new species of Proegernia from the Namba Formation in South Australia and the early evolution and environment of Australian egerniine skinks [PDF]

open access: yesRoyal Society Open Science, 2021
The diverse living Australian lizard fauna contrasts greatly with their limited Oligo-Miocene fossil record. New Oligo-Miocene fossil vertebrates from the Namba Formation (south of Lake Frome, South Australia) were uncovered from multiple expeditions ...
K. M. Thorn   +5 more
doaj   +1 more source

Parmalean and other siliceous nannofossils from the Oligocene of Polish Flysch Carpathians [PDF]

open access: yesActa Palaeontologica Polonica, 2023
Well-preserved fossil assemblages provide valuable insights into the evolutionary history of biota and their environments. Here, we report on Rupelian (early Oligocene) siliceous nanoeukaryotes from diatomites in the Carpathian Mountains, southeastern ...
Irena Kaczmarska, James M. Ehrman
doaj   +1 more source

Biostratigraphy of the Pabdeh Formation in the Parsi Oil Field (Dezful Embayment, South-West Iran) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2021
In order to study biostratigraphy and the determination of biozonation in the Pabdeh Formation based on the new planktonic foraminifera biozonation in the Tethys region, one subsurface section in well 1 of the Parsi Oil Field was selected in the southern
Masume Sabokro   +3 more
doaj   +1 more source

Multispecies leatherback turtle assemblage from the Oligocene Chandler Bridge and Ashley formations of South Carolina, USA [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Paleogene dermochelyid species richness far exceeded that of today. Leatherback sea turtles were most species rich in the Paleogene, but their richness declined sharply during the Neogene with only one species existing today, Dermochelys coriacea.
Bailey R. Fallon   +1 more
doaj   +1 more source

Biostratigraphy and Paleoecological Inferences Based on Oligocene Calcareous Nannofossils from the Ceará Rise (ODP Leg 154, Site 929A): Equatorial Atlantic Ocean [PDF]

open access: yesAnuário do Instituto de Geociências, 2020
The Ceará Rise is an aseismic feature located in the Equatorial Atlantic Ocean, between the Amazon Cone, Demerara Abyssal Plain and the Ceará Abyssal Plain, which represents a key area for the understanding of deep ocean facies. In the oil and gas field,
Anaiza Claudia Meira Devellard Fionda   +4 more
doaj   +1 more source

Reassessment of amber-bearing deposits of Provence, southeastern France

open access: yesBSGF - Earth Sciences Bulletin, 2021
The presence of “geological” amber (or “succin” in old French monographs) has been reported for several centuries in the Mesozoic deposits of Provence, southeastern France.
Saint Martin Jean-Paul   +9 more
doaj   +1 more source

Tuning the Charge Transfer and Optoelectronic Properties of 4,6-Di(Thiophene-2-Yl)Pyrimidine Via Oligocenothiophene Substitution [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
Five new derivatives of 4,6-di(thiophen-2-yl)pyrimidine (DTP) were designed by structural modification with the aim to tune the electro-optical and charge transfer properties.
A. Irfan   +5 more
doaj   +1 more source

New Discovery of Oligocene Strata in the Topernawi Formation, Turkana County, Kenya

open access: yesFrontiers in Earth Science, 2022
New field observations and 40Ar/39Ar geochronology reveal that the Topernawi Formation of the Ekitale Basin, northern Turkana Depression, Turkana County, Kenya was deposited entirely during the Oligocene between 29.7 ± 0.5 Ma and 29.24 ± 0.08 Ma.
Francis J. Sousa   +10 more
doaj   +1 more source

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