Results 251 to 260 of about 7,570,095 (295)

Life in the Early Triassic Ocean

Science, 2012
About 250 million years ago, extremely hot ocean temperatures had lethal effects on ocean life.
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Early ornithischian dinosaurs: the Triassic record

Historical Biology, 2007
Ornithischian dinosaurs are one of the most taxonomically diverse dinosaur clades during the Mesozoic, yet their origin and early diversification remain virtually unknown.
Randall B. Irmis, William G. Parker, Sterling J. Nesbitt, Jun Liu   +3 more
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Recurrent biotic rebounds during the Early Triassic: biostratigraphy and temporal size variation of conodonts from the Nanpanjiang Basin, South China

Journal of the Geological Society, 2019
Eleven conodont zones are established for the Lower Triassic of the Motianling section in the Nanpanjiang Basin, South China. Detailed size measurements on 2244 P1 conodont elements demonstrate dynamic size variation patterns during the Early Triassic ...
Kui Wu, L. Tian, Lei Liang, I. Metcalfe, Daoliang Chu, J. Tong   +5 more
semanticscholar   +1 more source

Recurrent Early Triassic ocean anoxia

Geology, 2012
The Early Triassic record, from the Smithian stratotype, shows that the organic carbon isotope record from northwest Pangea closely corresponds to major fluctuations in the inorganic carbon records from the Tethys, indicating truly global perturbations of the carbon cycle occurred during this time. Geochemical proxies for anoxia are strongly correlated
S. E. Grasby, B. Beauchamp, A. Embry, H. Sanei   +3 more
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Late Permian to Early Triassic magnetostratigraphy

Earth and Planetary Science Letters, 1991
A Late Permian to Early Triassic magnetostratigraphic reference section is presented. The Lower Triassic part is based on results from marine limestone sections in South China published earlier [1,2]. Reliable new Permian data are added here which have been collected in the Nammal gorge (Salt Range, Northwest Pakistan) where marine sediments have been ...
Maja Haag, Friedrich Heller
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Early Triassic tetrapod faunas of southeastern Gondwana

Alcheringa: An Australasian Journal of Palaeontology, 1986
A modified version of the Simpson index is used to assess similarities between the Early Triassic tetrapod faunas of Australia, Antarctica, India and South Africa. This index takes into account the relative abundances of taxa, and not merely their presence or absence.
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Gastropod evidence against the Early Triassic Lilliput effect

Geology, 2010
Size reduction in the aftermath of the Permian-Triassic mass extinction event has repeatedly been described for various marine organisms, including gastropods (the Lilliput effect). A Smithian gastropod assemblage from Utah, USA, reveals numerous large-sized specimens of different genera as high as 70 mm, the largest ever reported from the Early ...
Brayard, Arnaud, Nützel, Alexander, Stephen, Daniel A., Bylund, Kevin G., Jenks, Jim, Bucher, Hugo   +5 more
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Persistent late Permian to Early Triassic warmth linked to enhanced reverse weathering

Nature Geoscience, 2022
Cheng Cao, C. Bataille, Haijun Song, M. Saltzman, Kate Tierney Cramer, Huaichun Wu, C. Korte, Zhao-Yu Zhang, Xiao-Ming Liu   +8 more
semanticscholar   +1 more source

Evolutionary models in the Early Triassic marine realm

Palaeogeography, Palaeoclimatology, Palaeoecology, 2017
The relative influences of extrinsic compared to intrinsic drivers of evolutionary change have long been theorized and debated in the fossil record. Ecological recoveries from mass extinction events present records in which to examine these contrasts ...
C. Pietsch, K. Ritterbush, Jeffrey R. Thompson, E. Petsios, D. Bottjer   +4 more
semanticscholar   +1 more source

Phytogeography of Eurasia during the early triassic

Palaeogeography, Palaeoclimatology, Palaeoecology, 1987
Abstract New data of Chinese and Soviet palaeontologists and stratigraphers allow correlation between the Triassic plant-bearing beds of Siberia, China and western Europe. The early Triassic floras of these regions were much more connected than supposed.
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