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A Comprehensive Introduction to The Triassic Period & Events /
Published 2012“…The extinction event that closed the Triassic Period has recently been more accurately dated, but as with most older geological periods, the rock beds that define the start and end are well identified, but the exact dates of the start and end of the period are uncertain by a few million years. …”
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The northern Qiangtang Block rapid drift during the Triassic Period: Paleomagnetic evidence
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Research on the relationship between hydrocarbon source-reservoir assemblage system and lacustrine level changes in Triassic period of Lunnan area
Published 2024-03-01“…On this basis, the cumulative offset value was calculated, and finally the lacustrine level changes curve was established during the Triassic period in Lunnan area. The results show that there were three obvious lacustrine level fluctuation cycles in the Triassic period in this area. …”
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Carbonate Concretions in Triassic Yanchang Formation (Ordos Basin, China) as Evidence of Hydrothermal Activity
Published 2023-06-01“…During the middle–late Triassic period, tectonic movement of the basin occurred, and synsedimentary faults developed in the Yanchang Formation. …”
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Reflection of sea level fluctuations in the Triassic Section of South-Eastern Pamirs
Published 2014-12-01“…Revealed levels of eustatic fall of sea level during the Triassic period.…”
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Crustacean (Group of Arthropods) /
Published 2012“…The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which has existed apparently unchanged since the Triassic period. …”
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Relationships of new world Phlebotomine sand flies (Diptera: Psychodidae) based on fossil evidence
Published 2003-01-01“…A common Phlebotominae ancestor was present in the Triassic period before the separations of continents (248 myr).…”
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Encyclopedia of Triassic, Jurassic and Cretaceous Periods /
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Trace Element Composition of Pyrite from Selected Black Shale and Chert Exposures in the Central Belt of Peninsular Malaysia: Implications for Mineral Exploration
Published 2023-06-01“…EPMA and LA ICP-MS data show consistent Se content variation in the Devonian and Permo-Triassic periods. Using selenium as a proxy for atmospheric oxygenation, the lowest level of Se content in the Permo-Triassic period is believed to decrease atmospheric oxygenation, as recorded in sedimentary pyrite found in black shale from the Selinsing gold deposit. …”
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Understanding the provenance and depositional conditions of Triassic sedimentary rocks from the Spiti region, Tethys Himalaya, India
Published 2023-06-01“…The εNd and 87Sr/86Sr systematics record a shift in source terrains from the Early to Late Triassic period. The Early Triassic samples show much older depleted mantle model ages (TDM = 1.94–1.98 Ga) compared to Late Triassic sediments (TDM = 1.76–1.91 Ga). …”
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Hemispheric Symmetry of Planetary Albedo: A Corollary of Nonequilibrium Thermodynamics
Published 2023-08-01“…The prognosed polar albedo is consistent with the current observation, which moreover is little altered during the ice age of more reflective land and the early Triassic period of symmetric land, suggesting its considerable stability through Earth’s history. …”
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Extant thrips diverged in the early tertiary period
Published 2023-08-01“…Abstract Thysanoptera, commonly known as thrips, are diverse tiny insects whose earliest fossil record dates back to the Triassic period. Since there are few studies on the divergence time of taxa under Thysanoptera, this study used 13 mitochondrial coding protein genes to reconstruct the phylogenetic tree with divergence time of 26 species of this order and show a reliable phylogenetic relationship of thrips species. …”
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Evolution of Mammals /
Published 2012“…The synapsid lineage became distinct from the sauropsid ("reptile") lineage in the late Carboniferous period, between 320 and 315 million years ago, and were the most common and largest land vertebrates of the Permian period. But in the Triassic period a previously obscure group of sauropsids, the archosaurs, became the dominant vertebrates and one archosaur group, the dinosaurs, dominated the rest of the Mesozoic era. …”
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Late Triassic Tectonic Setting in Northeastern Margin of North China Craton: Insight into Sedimentary and Apatite Fission Tracks
Published 2023-07-01“…However, it was not until the Triassic period that the complete closure of the ocean occurred at the northeastern margin of the North China Craton. …”
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Ontogeny of highly variable ceratitid ammonoids from the Anisian (Middle Triassic)
Published 2021-03-01“…Ammonoids reached their greatest diversity during the Triassic period. In the early Middle Triassic (Anisian) stage, ammonoid diversity was dominated by representatives of the family Ceratitidae. …”
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Triassic-Jurassic organic carbon isotope stratigraphy of key sections in the western Tethys realm (Austria)
Published 2009“…The late Triassic period is recognized as one of the five major mass extinctions in the fossil record. …”
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Mammals (Class of Air-breathing Vertebrate Animals) /
Published 2012“…Although they were preceded by many diverse groups of non-mammalian synapsids (sometimes misleadingly referred to as mammal-like reptiles), the first true mammals appeared in the Triassic period. Modern mammalian orders appeared in the Palaeocene and Eocene epochs of the Palacogene period: Phylogenetically, the clade Mammalia is defined as all descendants of the most recent common ancestor of monotremes (eg .. echidnas and platypuses) and therian manuals (marsupials and placentals).…”
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Linking Siberian Traps LIP Emplacement and End-Permian Mass Extinction: Evidence from Magnetic Stratigraphy of the Maymecha-Kotuy Volcanic Section
Published 2020-08-01“…The major part of the Maymecha-Kotuy section erupted in the beginning of Early Triassic period and postdate came the onset of the biotic crisis. …”
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