Results 61 to 70 of about 41,624 (295)

Main controlling factors and development patterns of high-quality igneous rock reservoirs in the mesozoic of the Qikou Sag

open access: yesFrontiers in Earth Science
The Mesozoic volcanic reservoirs in Qiqikou Sag are complex and diverse. Identifying the characteristics and main controlling factors of high-quality volcanic reservoirs is the key to improve the reserves and production of oil and gas in this area.
Changwei Chen   +8 more
doaj   +1 more source

Petrogenesis of Mesozoic Magmatic Suites in the Jiaodong Peninsula: Implications for Crust-Mantle Interactions and Decratonization

open access: yes, 2023
The North China Craton (NCC) has thick lithosphere in the Paleozoic (>200 km) but appears to be decratonized in the Mesozoic. However, the actual processes operated in the lower crust-deep mantle are still unclear.
Leilei Dong   +3 more
core   +1 more source

Osteology of the pectoral girdle and forelimb of Siriusgnathus niemeyerorum, a Late Triassic traversodontid cynodont from Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Traversodontids are non‐mammaliaform cynodonts, herbivorous to omnivorous, that lived during the Triassic. In the Late Triassic, some members of this group increased in body size relative to other cynodont lineages and evolved postcranial adaptations associated with locomotion.
Jhonata H. A. Martins, Leonardo Kerber
wiley   +1 more source

Application of 2D Fused Wide-line Seismic Processing Technology in Mesozoic Exploration of the Northern South China Sea

open access: yesCT Lilun yu yingyong yanjiu
The exploration of Mesozoic strata in the Chaoshan Sag of the Pearl River Mouth Basin in the South China Sea faces challenges such as severe seismic wave energy shielding and strong multiple-wave development. This study introduces a wide-line acquisition
Jiawei LI   +5 more
doaj   +1 more source

150 million years of freshwater fish biogeography: vicariance or dispersal? [PDF]

open access: yesResearch & Knowledge, 2017
Freshwater fishes are supposedly good case studies to test palaeobiogeographical models because they are attached to land masses, at least primary freshwater fishes, which are unable to cross marine barriers.
Lionel Cavin
doaj   +1 more source

The Mesozoic-Cenozoic Tectonothermal Evolution of the Ruby Mountains, East Humboldt Range, Nevada : A Cordilleran Metamorphic Core Complex

open access: yes, 1986
A combined K-Ar and 40Ar/39Ar geochronological study of the Ruby Mountains-East Humboldt Range, Nevada, a Cordilleran metamorphic core complex, has revealed a complex tectonothermal history.
Dallmeyer, R. D   +8 more
core   +1 more source

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva   +1 more
wiley   +1 more source

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Caspar KR   +5 more
europepmc   +2 more sources

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva   +2 more
wiley   +1 more source

The endocranial anatomy of the stem turtle Naomichelys speciosa from the Early Cretaceous of North America [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Fossil turtles are one of the least studied clades in regard to endocranial anatomy. Recently, the use of non-invasive technologies, such as radiographic computed tomography (CT), increased the knowledge of the neuroanatomy of several extinct and extant ...
Ariana Paulina-Carabajal   +2 more
doaj   +1 more source

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