Results 41 to 50 of about 104,630 (326)

The age and origin of the central Scotia Sea [PDF]

open access: yes, 2010
Opening of the Drake Passage gateway between the Pacific and Atlantic oceans has been linked in various ways to Cenozoic climate changes. From the oceanic floor of Drake Passage, the largest of the remaining uncertainties in understanding this opening is
Eagles, Graeme
core   +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

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

Indigenous demosponge spicules in a Late Devonian stromatoporoid basal skeleton from the Frasnian of Belgium [PDF]

open access: yes, 2014
This paper records the first example of a demosponge spicule framework in a single specimen of a Devonian stromatoporoid from the Frasnian of southern Belgium.
Alvarez   +51 more
core   +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

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

Mesozoic Coleopteran Faunas fromArgentina: Geological Context, Diversity, Taphonomic Observations, and Comparison with Other Fossil Insect Records [PDF]

open access: yes, 2012
The order Coleoptera is the most diversified group of the Class Insecta and is the largest group of the Animal Kingdom. This contribution reviews the Mesozoic insects and especially the coleopteran records from Argentina, based on bibliographical and ...
Gallego, Oscar Florencio   +2 more
core   +2 more sources

Oil and gas prediction basing on seismic inversion of elastic properties in Chaoshan depression, south China sea

open access: yesFrontiers in Earth Science, 2023
The marine Mesozoic is widely distributed in the northeastern waters of the South China Sea and is an important field for oil-gas exploration in the South China Sea. The Chaoshan Depression is the largest residual depression in this sea.
Zhong Guangjian   +9 more
doaj   +1 more source

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

open access: yes, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert   +80 more
core   +3 more sources

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