Results 71 to 80 of about 154,283 (378)

Climate simulation of the latest Permian: Implications for mass extinction [PDF]

, 2005
This report presents the results of climate modeling research which indicates that elevated levels of carbon dioxide in the atmosphere at the end of the Permian period led to climatic conditions inhospitable to both marine and terrestrial life.
Benton, Berner, Berner, Campbell, Christine A. Shields, Chumakov, Grice, Holser, Hotinski, Isozaki, Jeffrey T. Kiehl, Kidder, Kutzback, Rees, Renne, Retallack, Retallack, Ryskin, Taylor, Wang, Ward, Wignall, Zhang   +22 more
core   +1 more source

Pore evolution in tight sandstone and its impact on oil saturation: a case study of Chang 6 to Chang 8 reservoirs in Triassic Yanchang Formation, Ganquan area, Ordos Basin

Shiyou shiyan dizhi
Tight sandstone reservoirs exhibit strong microscopic heterogeneity and significant variations in oil saturation. To investigate the variations in pore and throat size distribution during the diagenesis of tight sandstone reservoirs as well as their ...
Hongli ZHONG, Lihua CHEN, Fengqi ZHANG, Yongqi LIANG   +3 more
doaj   +1 more source

New finds of Olenekian, Early Triassic, trematosaurid amphibians and prolocophonid reptiles from Poland [PDF]

Acta Palaeontologica Polonica
The continental Lower Triassic (Middle Buntsandstein) siliciclastic deposits exposed along the margins of the Holy Cross Mountains, Poland, yield locally abundant vertebrate footprints and bones.
TOMASZ SULEJ, MARCIN MACHALSKI, MATEUSZ TAŁANDA   +2 more
doaj   +1 more source

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

, 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, Lara, Maria Belén, Vaz Tassi, Lara   +2 more
core   +2 more sources

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

The Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae, Julien Benoit, Irina Ruf, Zoleka Sibiya, Bhart‐Anjan S. Bhullar   +4 more
wiley   +1 more source

The Khadzhokh Canyon System—An Important Geosite of the Western Caucasus

Geosciences, 2020
True diversity of geological heritage sites (geosites) is yet to be fully understood. New field studies of the Khadzhokh Canyon and its vicinities in the Western Caucasus (Mountainous Adygeya tourist destination, southwestern Russia) have allowed ...
Anna V. Mikhailenko, Dmitry A. Ruban, Vladimir A. Ermolaev   +2 more
doaj   +1 more source

Key geochemical evidence of "near-source accumulation" of tight oil: a case study of near-source assemblage of Triassic Yanchang Formation in Ordos Basin

Shiyou shiyan dizhi, 2023
The conclusion of "near-source accumulation" of tight oil is inferred based on the reservoir characte-ristics that crude oil is difficult to migrate laterally for a long distance in low-permeability reservoirs, yet there has been no direct geochemical ...
Zhenglu XIAO, Yong LI, Jian YU, Hai ZHANG, Jungang LU, Xiangdong YIN, Meimei HAN   +6 more
doaj   +1 more source

Review of Dysmorphoptilidae Handlirsch (Hemiptera: Cicadomorpha) from the Argentinean Triassic, with description of a new subfamily, and a new species [PDF]

, 2006
This contribution presents new fossil insect taxa of the order Hemiptera (Cicadomorpha, Dysmorphoptilidae, Gallegomorphoptilinae subfam. n.) from the Ischichuca Formation (late Middle Triassic to early Late Triassic) from La Rioja Province (Argentina ...
Gallego, Oscar Florencio, Martins-Neto, R.G.   +1 more
core  

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

The Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Influence of source-reservoir contact conditions on the enrichment of near-source tight oil: taking Chang 81 reservoir in the Longdong area of Ordos Basin as an example

Shiyou shiyan dizhi, 2022
The geological characteristics of tight oil have been relatively well understood, but there are certain questions needed to be answered regarding the distribution of tight oil.
Zhenglu XIAO, Yong LI, Zhiyong ZHU, Jungang LU, Zixing LU, Chengshan LI   +5 more
doaj   +1 more source