Results 81 to 90 of about 154,283 (378)

Accretionary Tectonics of the North American Cordillera [PDF]

, 1983
Continental geology stands on the threshold of a change that is likely to be as fundamental as plate-tectonic theory was for marine geology. Ongoing seismic-reflection investigations into the deep crustal structure of North America are verifying that ...
Saleeby, Jason B.
core   +2 more sources

Triassic Footprints [PDF]

Nature, 1880
n ...
openaire   +1 more source

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink, Kelly Roberta da Silva, Marco Aurélio Gallo de França, Débora Melo Ferrer de Morais, Matías Soto, Christopher J. Duffin   +5 more
wiley   +1 more source

Middle-Late Triassic insect radiation revealed by diverse fossils and isotopic ages from China

Science Advances, 2018
Chinese fossils reveal a Triassic insect radiation. The Triassic represented an important period that witnessed the diversification of marine and terrestrial ecosystems.
D. Zheng, Su-Chin Chang, He Wang, Yan Fang, Jun Wang, C. Feng, G. Xie, E. Jarzembowski, Haichun Zhang, Bo Wang   +9 more
semanticscholar   +1 more source

Indosinian high-strain deformation for the Yunkaidashan tectonic belt, south China : Kinematics and 40Ar/39Ar geochronological constraints [PDF]

, 2007
Structural and 40Ar/39Ar data from the Yunkaidashan Belt document kinematic and tectonothermal characteristics of early Mesozoic Indosinian orogenesis in the southern part of the South China Block.
Bureau of Geology and Mineral Resources of Guangdong Province (GDBGMR), Bureau of Geology and Mineral Resources of Guangxi Zhuang Autonomous Region (GXBGMR), Bureau of Geology and Mineral Resources of Jiangxi Province (JXBGMR), Cai, Carter, Cawood, Cawood, Cawood, Chen, Chen, Chen, Chen, Cobbold, Cruden, Deng, Deprat, Ding, Dodson, Ellis, Engebretson, Faure, Fromaget, Goodel, Gradstein, Guo, Hacker, Hames, Harrison, Hodges, Holloway, Hsû, Huang, Hunan Bureau of Geology and Mineral Resources (HNBGMR), Konopásek, Law, Lepvrier, Li, Li, Li, Li, Liang, Liang, Lin, Liu, Lo, Metcalfe, Metcalfe, Monir, Peng, Peng, Peng, Peng, Peter A. Cawood, Purdy, Qiu, Ren, Richard, Sang, Shaocheng Ji, Stevens, Thompson, Touping Peng, Tullis, Twiss, Veevers, Veevers, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Weiming Fan, Willett, Woodcock, Xinyue Chen, Xu, Xu, Xu, Yan, Yardley, Yuan, Yuejun Wang, Zhang, Zhong, Zhong, Zhou, Zhou, Zhu   +90 more
core   +1 more source

Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms

The Anatomical Record, EarlyView.
Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Frederick B. Tolchard, Brynden W. Perkins, Sterling J. Nesbitt   +2 more
wiley   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay (Devon, SW England) [PDF]

, 2001
Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay(Devon, SW England). Proceedings of the Geologists’ Association, 112. 349–360. New exposures in Pinhay Bay (SE Devon) of the White Lias (Langport Member of the Lilstock Formation)and ...
Wignall, P.B.
core   +1 more source

An overview of the postcranial osteology of caecilians (Gymnophiona, Lissamphibia)

The Anatomical Record, EarlyView.
Abstract Caecilians comprise a relatively small (~220 species) group (Gymnophiona) of snake‐like or worm‐like, mostly tropical amphibians. Most adult caecilians are fossorial, although some species may live in aquatic or semi‐aquatic environments, either as larvae or adults.
Rodolfo Otávio Santos, Mark Wilkinson, Hussam Zaher   +2 more
wiley   +1 more source

Unexpected Early Triassic marine ecosystem and the rise of the Modern evolutionary fauna

Science Advances, 2017
A new marine fossil assemblage from the Early Triassic shows unexpected phyletic diversity and functional complexity. In the wake of the end-Permian mass extinction, the Early Triassic (~251.9 to 247 million years ago) is portrayed as an environmentally ...
A. Brayard, L. Krumenacker, J. Botting, J. Jenks, K. G. Bylund, E. Fara, E. Vennin, Nicolas Olivier, N. Goudemand, T. Saucède, S. Charbonnier, C. Romano, L. Doguzhaeva, Ben Thuy, M. Hautmann, D. Stephen, C. Thomazo, Gilles Escarguel   +17 more
semanticscholar   +1 more source