triassic jurassic extinction time - EAS

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  1. 201 million years ago
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    The Triassic-Jurassic extinction event was the fourth major global extinction of the Phanerozoic eon. The event occurred around 201 million years ago at the end of the Triassic Period (a period that lasted from 252-201 million years ago).

    The Triassic-Jurassic Extinction

    icetonline.com
    Triassic Period, in geologic time, the first period of the Mesozoic Era. It began 252 million years ago, at the close of the Permian Period, and ended 201 million years ago, when it was succeeded by the Jurassic Period.

    Triassic Period | Plants, Animals, Major Events, & Fa…

    britannica.com
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    What caused the end Triassic extinction?

    The Tragic Truth About The Triassic Mass Extinction

    • Pangea did it. ...
    • There were mega-monsoons. ...
    • A meteor strike might have contributed. ...
    • There was an initial drop in sea level. ...
    • Volcanic eruptions were the tipping point. ...
    • The ocean became more acidic. ...
    • About 76% of all species died out. ...
    • Goodbye, giant amphibians. ...
    • The conodonts also disappeared. ...
    • Our ancestors survived. ...

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    What caused Triassic Jurassic extinction?

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    What caused Jurassic extinction?
    What caused Jurassic extinction? The cause of the Triassic – Jurassic extinction event is unknown. Unlike some of the other mass extinctions of the past, little evidence has coalesced around any particular interpretation. Some hypotheses include meteor impact and volcanic traps, or massive sustained eruptions over the course of a million years.

    What caused the Jurassic Period to end? - Jurassic Period

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    Did pterosaurs survive extinction?
    “There has been a lot of discussion about what enabled modern-type birds to survive the K-Pg extinction while other birds groups, non-avian dinosaurs, and even pterosaurs perished,” says Royal BC Museum paleontologist Derek Larson. The end of the Cretaceous boasted an entire array of birds and bird-like reptiles.

    Why did the pterosaurs go extinct while birds didn’t? : evolution

    www.smithsonianmag.com/science-nature/why-birds-sur…
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    How long did the Permian Triassic extinction take?
    Some scientists estimate that it took 10 million years (until the Middle Triassic ), due both to the severity of the extinction and because grim conditions returned periodically for another 5 million years.

    Permian–Triassic extinction event - Wikipedia

    www.wired.co.uk/article/mass-extinction-recovery
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    Triassic–Jurassic extinction event - Wikipedia

    https://en.wikipedia.org/wiki/Triassic–Jurassic_extinction_event

    The Triassic–Jurassic (Tr-J) extinction event, sometimes called the end-Triassic extinction, marks the boundary between the Triassic and Jurassic periods, 201.3 million years ago, and is one of the major extinction events of the Phanerozoic eon, profoundly affecting life on land and in the

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    Effects

    This event vacated terrestrial ecological niches, allowing the dinosaurs to assume the dominant roles in the Jurassic period. This event happened in less than 10,000 years and occurred just before Pangaea started to break apart. In

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    Literature

    • Hodych, J. P.; G. R. Dunning (1992). "Did the Manicougan impact trigger end-of-Triassic mass extinction?". Geology. 20 (1): 51–54.

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    Possible causes

    Gradual processes
    Gradual climate change, sea-level fluctuations, or a pulse of oceanic acidification during the lat

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    External links

    • Theories on the Triassic–Jurassic Extinction
    • The Triassic–Jurassic Mass Extinction

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  5. Triassic-Jurassic Mass Extinction - ThoughtCo

    https://www.thoughtco.com/triassic-jurassic-mass-extinction-3954546

    Feb 28, 2016 · The fourth major mass extinction event happened around 200 million years ago at the end of the Triassic Period of the Mesozoic Era to usher in the Jurassic Period. This mass extinction event was actually a combination of smaller mass extinction periods that happened …

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    What was the cause of the Triassic-Jurassic mass extinction?
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  6. The Triassic-Jurassic Extinction - WorldAtlas

    https://www.worldatlas.com/articles/the-triassic-jurassic-extinction.html
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    The Triassic-Jurassic extinction event was the fourth major global extinction of the Phanerozoic eon. The event occurred around 201 million years ago at the end of the Triassic Period (a period that lasted from 252-201 million years ago). The extinction event was a combination of smaller global extinction events that occur…
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    • Estimated Reading Time: 3 mins

  7. The Triassic-Jurassic Extinction

    https://icetonline.com/the-triassic-jurassic-extinction
    • The Triassic-Jurassic extinction event was the fourth major global extinction of the Phanerozoic eon. The event occurred around 201 million years ago at the end of the Triassic Period (a period that lasted from 252-201 million years ago). The extinction event was a combination of smaller global extinction events that occurred over the last 18 milli...
    See more on icetonline.com

  8. end-Triassic extinction | Evidence & Facts | Britannica

    https://www.britannica.com/science/end-Triassic-extinction

    end-Triassic extinction, also called Triassic-Jurassic extinction, global extinction event occurring at the end of the Triassic Period (about 252 million to 201 million years ago) that resulted in …

  9. The Triassic, Jurassic, and Cretaceous Periods - ThoughtCo

    https://www.thoughtco.com/the-three-ages-of-dinosaurs-1091932

    Jan 20, 2019 · At the start of the Triassic period, 250 million years ago, the Earth was just recovering from the Permian/Triassic Extinction, which witnessed the demise of over two …

  10. Triassic Period—251.9 to 201.3 MYA - National Park Service

    https://www.nps.gov/articles/000/triassic-period.htm

    Triassic Time Span. Date range: 251.9 million years ago–201.3 million years ago. Length: 51.4 million years (1.1% of geologic time) Geologic calendar: December 12 (1 AM)–December 16 (1 …

  11. Triassic Period Facts and Information | National Geographic

    https://www.nationalgeographic.com/science/article/triassic

    Triassic Period. Learn about the time period that took place 251 to 199 million years ago. The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. …

  12. Triassic Period | Plants, Animals, Major Events, & Facts

    https://www.britannica.com/science/Triassic-Period

    Triassic Period, in geologic time, the first period of the Mesozoic Era. It began 252 million years ago, at the close of the Permian Period, and ended 201 million years ago, when it was …

  13. Triassic Period - Natural History Museum

    https://natmus.humboldt.edu/.../triassic-period

    Oct 30, 2012 · Triassic* flora and fauna differ significantly from the Permian biota lost to the greatest extinction event of the Phanerozoic Eon. The differences in Permian and Triassic …



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