Results 21 to 30 of about 22,860 (301)

A probable oligochaete from an Early Triassic Lagerstätte of the southern Cis-Urals and its evolutionary implications [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Oligochaetes, despite their important role in terrestrial ecosystems and a tremendous biomass, are extremely rare fossils. The palaeontological record of these worms is restricted to some cocoons, presumable trace fossils and a few body fossils the most ...
Dmitry E. Shcherbakov   +4 more
doaj   +1 more source

Mesozoic and Cenozoic decapod crustaceans from the Basque-Cantabrian basin (Western Pyrenees): new occurrences and faunal turnovers in the context of basin evolution

open access: yesBSGF - Earth Sciences Bulletin, 2017
Twenty-nine new identifications of fossil decapod crustacean remains in the Basque-Cantabrian Basin (Western Pyrenees) spanning from the Jurassic to the Miocene and coming from twenty-four new and five yet known localities are described here for the ...
López-Horgue Mikel A., Bodego Arantxa
doaj   +1 more source

Tectonostratigraphic History of Mesopotamian Passive Margin during Mesozoic and Cenozoic, South Iraq. [PDF]

open access: yesKirkuk Journal of Science, 2008
Passive margin of Mesopotamian zone formed by two tectonic phases: opening and closing phases. Opening tectonic phase (Permian-Jurassic) represents the beginning of Wilson cycle. This phase includes three stages: pre-rifting, rifting and post-rifting. In
Wathiq Gh. Almutury and Maher M. Al-Asadi
doaj   +1 more source

Fission track ages and Mesozoic tectonic uplift in the Niushoushan-Luoshan area on the western edge of the Ordos Basin

open access: yesDizhi lixue xuebao, 2023
The western margin of the Ordos Basin and its adjacent regions have undergone a complex tectonic evolution from the Mesozoic to the Cenozoic era. However, the question of tectonic uplift since the Cenozoic era remains a topic of contention, and the ...
TIAN Zhaoyang   +5 more
doaj   +1 more source

New Early Cretaceous pentatomorph bugs from China and the systematic position of Kobdocoridae [PDF]

open access: yesActa Palaeontologica Polonica
Kobdocoridae is an extinct family of the infraorder Pentatomomorpha, mainly distributed in the Eurasia and currently comprise only nine species from seven genera in three locations.
RUI DAI   +4 more
doaj   +1 more source

First record of chimaeroid fish Ischyodus from the Upper Jurassic of southwestern Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2021
This study presents two specimens of Chimaeriformes from Upper Jurassic strata of central Chile. The material was recovered from Tithonian levels of the Baños del Flaco Formation and includes two different individuals, one preserving two articulated ...
Rodrigo A. Otero   +5 more
doaj   +1 more source

Guaraní Aquifer System sedimentary petrography of outcropping formations and hydrogeologic implications

open access: yesAgrociencia Uruguay, 2022
Petrographic analyses are presented for the Rivera, Tacuarembó and Cuchilla Ombú formations, which constitute the outcropping Guaraní Aquifer System in the Rivera and Tacuarembó departments, Uruguay.
Paula Collazo   +2 more
doaj   +1 more source

Paleoproteomics of Mesozoic Dinosaurs and Other Mesozoic Fossils

open access: yesPROTEOMICS, 2019
AbstractMolecular studies have contributed greatly to our understanding of evolutionary processes that act upon virtually every aspect of living organisms. However, these studies are limited with regard to extinct organisms, particularly those from the Mesozoic because fossils pose unique challenges to molecular workflows, and because prevailing wisdom
Mary Higby Schweitzer   +3 more
openaire   +4 more sources

Integrated phylogenomic and fossil evidence of stick and leaf insects (Phasmatodea) reveal a Permian–Triassic co-origination with insectivores [PDF]

open access: yesRoyal Society Open Science, 2020
Stick and leaf insects (Phasmatodea) are a distinctive insect order whose members are characterized by mimicking various plant tissues such as twigs, foliage and bark.
Erik Tihelka   +4 more
doaj   +1 more source

Formation and evolution of Yin'gen-E'ji'naqi Basin and prospects for oil and gas exploration

open access: yesShiyou shiyan dizhi, 2020
The Yin'gen-E'ji'naqi Basin is located in the central and western part of the Inner Mongolia autonomous region, with an area of about 123×103 km2. It is a continental rift basin with a low exploration degree in North China.
Hong'an ZHANG   +7 more
doaj   +1 more source

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