Results 11 to 20 of about 1,669,619 (276)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+18 more sources

Flora of the Late Triassic

open access: yes, 2017
The Triassic was a time of diversification of the global floras following the mass-extinction event at the close of the Permian, with floras of low-diversity and somewhat uniform aspect in the Early Triassic developing into complex vegetation by the Late Triassic.
Evelyn Kustatscher   +6 more
openaire   +2 more sources

The Late Triassic World

open access: yes, 2018
During faunal recovery after the Permo-Triassic mass extinction (PTME), several tetrapod lineages independently evolved adaptations to marine life. Thus reptiles became significant elements of marine environments already at the beginning of the Mesozoic ...
Dalla Vecchia F. M.   +1 more
openaire   +2 more sources

Palaeomagnetism and magnetostratigraphy of the Permian and Triassic of Spitsbergen : a review of progress and challenges. [PDF]

open access: yes, 2008
Permian and Triassic sediments from Svalbard provide a testing ground for evaluating concepts about the polarity and configuration of the geomagnetic field during the Palaeozoic–Mesozoic transition.
Hounslow, Mark W., Nawrocki, Jerzy
core   +5 more sources

Late Triassic <i>†Cryptovaranoides microlanius</i> is a squamate, not an archosauromorph. [PDF]

open access: yesR Soc Open Sci
Abstract †Cryptovaranoides microlanius from the latest Triassic of England was described in 2022 as a crown-clade squamate, of importance as the oldest such modern-type lizard, extending their temporal range downward by 35 Myr. This view was challenged in 2023, and †Cryptovaranoides was reinterpreted as an archosauromorph.
Whiteside DI   +2 more
europepmc   +5 more sources

Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae). [PDF]

open access: yesJ Anat
A three‐dimensional model is used to analyze the locomotor biomechanics of the large Late Triassic archosaurian reptile Postosuchus kirkpatricki. The study finds that it is more uncertain than previously concluded whether it was quadrupedal or bipedal, and plantigrade or digitigrade, but it clearly had locomotor specializations including large hindlimb
Hutchinson JR   +6 more
europepmc   +2 more sources

Intercalibration of Boreal and Tethyan timescales: the magneto-biostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway [PDF]

open access: yes, 2008
An integrated bio-magnetostratigraphic study of the latest Early Triassic to the upper parts of the Middle Triassic, at Milne Edwardsfjellet in central Spitsbergen, Svalbard, allows a detailed correlation of Boreal and Tethyan biostratigraphies.
Mork, Atle   +5 more
core   +5 more sources

The palaeomagnetism of Late Permian-Early Triassic and Late Triassic deposits on Timor: an Australian origin? [PDF]

open access: yesGeophysical Journal International, 1990
SUMMARY studies have been carried out on sediments from two formations in Western Timor; (a) red, crinoid-bearing limestones of the Maubisse Formation of Late Permian-Early Triassic age and (b) reddish calcilutites and red shales of the Aituto Formation of Late Triassic age.
H. Wensink, S. Hartosukohardjo
openaire   +1 more source

Earliest Triassic microbialites in the South China Block and other areas; controls on their growth and distribution [PDF]

open access: yes, 2007
Earliest Triassic microbialites (ETMs) and inorganic carbonate crystal fans formed after the end-Permian mass extinction (ca. 251.4 Ma) within the basal Triassic Hindeodus parvus conodont zone.
Kershaw, S   +18 more
core   +1 more source

Impacts on Earth in the Late Triassic [PDF]

open access: yesNature, 1998
Spray et al. postulate that five widely dispersed terrestrial impact structures with very similar geological age estimates (about 214 million years ago, in the Late Triassic epoch) are evidence of a multiple impact event. Most notably, the three largest impact structures, Saint Martin in western Canada (~40 km diameter), Manicouagan in eastern Canada (~
openaire   +3 more sources

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