Results 1 to 10 of about 115,378 (317)

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

TAXONOMIC CONSIDERATION AND STRATIGRAPHIC IMPLICATION OF THE ACCELERATED EVOLUTION OF THE MAASTRICHTIAN-EOCENE TRANSITION OF TWENTY BENTHIC FORAMINIFERAL SPECIES IN THE TETHYS [PDF]

open access: yesEarth Sciences Pakistan, 2020
Within the Maastrichtian-Eocene transition in some localities in the Tethys, ten trends of accelerated evolution are recognized within twenty species belong to eight benthic foraminiferal genera: Siphogaudryina, Textularia, Pseudoclavulina, Pyramidulina,
Haidar Salim Anan
doaj   +1 more source

Magmatic Evolution of the Upper Eocene Monzonitic stock in the Kuh-e-Kalut-e-Ghandehari (Northwest of Anarak, Isfahan province)

open access: yesJournal of Economic Geology, 2023
In central part of the Mesozoic Ashin ophiolite (Northwest of Anarak, Isfahan province, Iran), the Upper Eocene monzonitic stock cross cuts the Ashin ophiolite and Middle Eocene volcanic rocks.
Marzieh Ghadirpour   +2 more
doaj   +1 more source

Lithological and stratigraphic characterization of the upper cretaceous and eocene sediments in the midlle Kura depression, Azerbaijan

open access: yesМінеральні ресурси України, 2022
The deeplying Mesozoic and Paleogene deposits of the Middle Kura depression have significant resource potential. They are the main complexes in terms of prospectivity for oil and gas exploration. The lithological-facies characteristics of the host rocks,
Sh. Kh. Akhundov   +3 more
doaj   +1 more source

Facultative monogamy in an early Eocene brooding oyster and its evolutionary implications [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Dwarf males of Ostrea jibananandai sp. nov. from the lower Eocene rocks of the Cambay Basin, western India, are found attached inside the anterior end of the hinge of large females. Commonly, one male is found inside a female shell.
Kalyan Halder, Aniket Mitra
doaj   +1 more source

Discovery of a crocodyliform tooth from the upper Eocene Ergilin Dzo Formation, Mongolia [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Although the distribution of Asian crocodyliforms was extended northwards during the Paleocene–Eocene greenhouse world, the fossil record in northern Asia becomes scarce towards the end of the Eocene.
Masaya Iijima   +4 more
doaj   +1 more source

Geochemistry and petrogenesis of Eocene shoshonitic ‎and adakitic volcanic rocks in Sonajeel area ‎(Southeast of Heris, Eastern Azerbaijan)‎ [PDF]

open access: yesپترولوژی, 2018
The studied area is located in the SE of Heris (Eastern Azerbaijan province) and the Alborz-Azerbaijan structural zone. The Eocene volcanic rocks in the area of under study show various compositions ranging from olivine basalt, hornblende basalt ...
Nasibeh Nemati   +2 more
doaj   +1 more source

On the systematic placement of Pyreneplax Ossó, Domínguez & Artal, 2014 (Decapoda, Brachyura, Vultocinidae)

open access: yesGeologija, 2020
Examination of the thoracic sternum and pleonal elements of a new male specimen of Pyreneplax basaensis Ossó, Domínguez & Artal, 2014 from the upper Eocene of northern Spain confirms its assignment to the family Vultocinidae Ng & Manuel-Santos, 2007 ...
Àlex OSSÓ, José Luis DOMÍNGUEZ
doaj   +1 more source

Structure and formation of the Lower Cretaceous–Eocene section in the central part of the Simferopol Uplift

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
This article provides the first detailed description of the 25-m thick Cretaceous–Eocene section near the Mazanka village and its stratigraphic subdivision.
K.A. Dubkova   +3 more
doaj   +1 more source

Eocene phymaraphiniid demosponges from South Western Australia: filling the gap

open access: yesActa Palaeontologica Polonica, 2023
We describe two new genera of phymaraphiniid lithistid sponges Twertupia gen. nov. and Pickettispongia gen. nov. from the upper Eocene Pallinup Formation of South Western (SW) Australia based on new, rich and very well preserved material. Type material
ANDRZEJ PISERA   +2 more
doaj   +1 more source

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