Results 21 to 30 of about 59,970 (323)

On impact and volcanism across the Cretaceous-Paleogene boundary

Science, 2020
An impact with a dash of volcanism Around the time of the end-Cretaceous mass extinction that wiped out dinosaurs, there was both a bolide impact and a large amount of volcanism. Hull et al. ran several temperature simulations based on different volcanic
P. Hull, A. Bornemann, D. Penman, M. Henehan, R. Norris, P. Wilson, P. Blum, L. Alegret, S. Batenburg, P. Bown, T. Bralower, C. Cournede, A. Deutsch, B. Donner, O. Friedrich, Sofie Jehle, Hojung Kim, D. Kroon, P. Lippert, D. Loroch, I. Moebius, K. Moriya, D. Peppe, G. Ravizza, U. Röhl, J. Schueth, J. Sepúlveda, P. Sexton, E. Sibert, K. Śliwińska, R. Summons, E. Thomas, T. Westerhold, J. Whiteside, T. Yamaguchi, J. Zachos   +35 more
semanticscholar   +1 more source

Types, characteristics, and implications on the exploration of far-source oil reservoirs in the north Melut Basin

地质科技通报, 2021
The Melut Basin is an important petroliferous basin in African Continent. The northern part of the basin is characterized by far-source oil accumulation with the oil generation in the Lower Cretaceous and the oil accumulation in the Paleogene. Clarifying
Zhongsheng Shi, Luo Xue, Lun Ma, Bintao Chen, Lei Wang, Wenzhu Pang, Jianglong Shi   +6 more
doaj   +1 more source

Short note on the first record of fossil shark teeth in the Chehel-Kaman formation, Iran [PDF]

Geološki Anali Balkanskoga Poluostrva, 2020
Shark teeth discovered in the late Paleocene-early Eocene Chehel-Kaman Formation in NE Iran bring new data on the fossil fish record from this country. Two genera from the location are described and figured.
Trif Nicolae, Ghaemi Farrokh, Taheri Jafar, Taherpour-Khalil-Abad Morteza   +3 more
doaj   +1 more source

Characteristics and sedimentary environment of organic-rich shale in the second member of Paleogene Funing Formation, Subei Basin

Shiyou shiyan dizhi, 2020
Two sets of organic-rich shales are developed in the second member of Funing Formation (E1f2) in the Subei Basin, which are E1f2shale 1 and E1f2shale 2. They are widely distributed, with rich shows and favorable shale oil conditions.
Hongliang DUAN, Shili LIU, Qian FU
doaj   +1 more source

PALEONTOLOGY AND PALEOGEOGRAPHY OF THE TETHYIAN AGGLUTINATED BENTHIC FORAMINIFERAL SPECIES OF THE GENUS SPIROPLECTINELLA [PDF]

Geological Behavior, 2022
Thirty three small diagnostic benthic foraminiferal species of the Textulariid genus Spiroplectinella are common in the Late Cretaceous-Neogene rocks from many Tethyan localities: North Atlantic (USA, Mexico, Caribbean), South America (Brazil, Argentina,
Haidar Salim Anan
doaj   +1 more source

Paleodistribution of Cercidiphyllaceae and Future Habitat Prediction for <i>Cercidiphyllum japonicum</i> Under Climate Change. [PDF]

Ecol Evol
Employing MaxEnt modeling, this research projects shifts in the potential suitable habitat range of Cercidiphyllum japonicum under climate change trajectories. Analysis identifies temperature and precipitation as dominant drivers governing habitat distribution, with models indicating significant range contraction throughout the forecast period ...
Mao P, Zeng M, Lv J, Wei J, Feng Q, Shu Y, Ma Y.   +6 more
europepmc   +2 more sources

Evolution and dispersal of snakes across the Cretaceous-Paleogene mass extinction

Nature Communications, 2021
Mass extinctions have repeatedly shaped global biodiversity. The Cretaceous-Paleogene (K-Pg) mass extinction caused the demise of numerous vertebrate groups, and its aftermath saw the rapid diversification of surviving mammals, birds, frogs, and teleost ...
Catherine G Klein, D. Pisani, D. Field, Rebecca Lakin, M. Wills, N. Longrich   +5 more
semanticscholar   +1 more source

The Origin of the Legumes is a Complex Paleopolyploid Phylogenomic Tangle Closely Associated with the Cretaceous–Paleogene (K–Pg) Mass Extinction Event

Systematic Biology, 2020
The consequences of the Cretaceous–Paleogene (K–Pg) boundary (KPB) mass extinction for the evolution of plant diversity remain poorly understood, even though evolutionary turnover of plant lineages at the KPB is central to understanding assembly of the ...
E. Koenen, D. I. Ojeda, F. Bakker, J. Wieringa, C. Kidner, O. Hardy, R. Pennington, P. Herendeen, Anne Bruneau, C. Hughes   +9 more
semanticscholar   +1 more source

Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru [PDF]

Acta Palaeontologica Polonica, 2020
A total of 25 species of mollusks and crustaceans are reported from Oligocene seep deposits in the Talara Basin in northern Peru. Among these, 12 are identified to the species-level, including one new genus, six new species, and three new combinations ...
Steffen Kiel, Frida Hybertsen, Matúš Hyžný, Adiël A. Klompmaker   +3 more
doaj   +1 more source

New Eocene South American native ungulates from the Quebrada de los Colorados Formation at Los Cardones National Park, Argentina [PDF]

Acta Palaeontologica Polonica, 2021
In the last few years, the Quebrada de Los Colorados Formation has become an important middle Eocene fossiliferous unit in Northwestern Argentina. In this unit, the South American native ungulates were until now only represented by the order Notoungulata,
Mercedes Fernández, Ana N. Zimicz, Mariano Bond, Laura Chornogubsky, Michelle Arnal, Magalí Cárdenas, Juan C. Fernicola   +6 more
doaj   +1 more source