Results 71 to 80 of about 104,619 (297)

Response of Cretaceous Palynological Records to Regional Tectonic Events and Global Climate Change in Liupanshan Basin, Northwest China

Applied Sciences
The transition of the East Asian tectonic system during the Jurassic-Cretaceous period has had a profound influence on the paleoclimatic evolution in Northwest China.
Bohua Liu, Fang Wu, Lijie Wei, Zhenhong Li, Xiaopeng Dong   +4 more
doaj   +1 more source

Peculiar macrophagous adaptations in a new Cretaceous pliosaurid [PDF]

Royal Society Open Science, 2015
During the Middle and Late Jurassic, pliosaurid plesiosaurs evolved gigantic body size and a series of craniodental adaptations that have been linked to the occupation of an apex predator niche. Cretaceous pliosaurids (i.e.
Valentin Fischer, Maxim S. Arkhangelsky, Ilya M. Stenshin, Gleb N. Uspensky, Nikolay G. Zverkov, Roger B. J. Benson   +5 more
doaj   +1 more source

Integrated stratigraphy of the Upper Hauterivian to Lower Barremian Agua de la Mula Member of the Agrio Formation, Neuquén Basin, Argentina [PDF]

, 2011
The Upper Hauterivian to Lower Barremian Agua de la Mula Member of the Agrio Formation (Neuquén Basin, Argentina) was studied applying an integrated stratigraphic approach and facies analysis.
Archuby, Fernando, Leanza, Hector Armando, Wilmsen, Markus   +2 more
core  

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Early cretaceous molybdenum-bearing felsic magmatic rocks in the tongmushan district, northern great Xing’an range: implications for mesozoic porphyry metallogenesis

Frontiers in Earth Science
The Nenjiang-Heihe metallogenic belt of the northern Great Xing’an Range is renowned for Mesozoic epithermal Au deposits, however, apart from the Duobaoshan and Tongshan super-large porphyry deposits in the Paleozoic, no superlarge porphyry copper ...
Wang Zhuo, Li Xu-Dong, Wang Jin, Li Cheng-Lu, Wang Zhao-Lin, Wang Zhao-Lin, Yin Yuqing, Yuan Mao-Wen, Lv Ming-Qi, Masroor Alam   +9 more
doaj   +1 more source

Thai amber: insights into early diatom history?

BSGF - Earth Sciences Bulletin, 2020
The origin of the diatoms still remains enigmatic. Their fossil record is scarce until the Late Cretaceous and great divergences exist between molecular data and the earliest fossil evidence. While molecular data indicate an origin during the Triassic or
Girard Vincent, Saint Martin Simona, Buffetaut Eric, Saint Martin Jean-Paul, Néraudeau Didier, Peyrot Daniel, Roghi Guido, Ragazzi Eugenio, Suteethorn Varavudh   +8 more
doaj   +1 more source

The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian-Berriasian of Feodosiya region (Eastern Crimea) [PDF]

, 2019
This article is concerned with nannofossil study of Tithonian-Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri minor, one of the potential marker-
Arkadiev, V., Baraboshkin, E., Concheyro, Graciela, Guzhikov, A., Lescano, Marina Aurora   +4 more
core   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

Provenance and geochemistry of exotic clasts in conglomerates of the Oligocene Torehina Formation, Coromandel Peninsula, New Zealand [PDF]

, 2003
Non-marine pebble to cobble conglomerates of the lower Torehina Formation (Oligocene) crop out along western Coromandel Peninsula and overlie, with strong angular discordance, continental-margin metasedimentary rocks (Manaia Hill Group) of Mesozoic (Late
Baker C. K., Ballance P. F., Black P. M., Dickinson W. R., Dix G. R., Dott R. H., Hayward B. W., Hochstein M. P., Hutchinson C. S., Kear D., Kear D., Kear D., King P. R., Kingma J. T., Laird M. G., Nelson C. S., Skinner D. N. B., Skinner D. N. B., Skinner D. N. B., Surdam R. C.   +19 more
core   +2 more sources

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source