enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Extinction event - Wikipedia

    en.wikipedia.org/wiki/Extinction_event

    The largest extinction was the Kellwasser Event (Frasnian - Famennian, or F-F, 372 Ma), an extinction event at the end of the Frasnian, about midway through the Late Devonian. This extinction annihilated coral reefs and numerous tropical benthic (seabed-living) animals such as jawless fish, brachiopods, and trilobites.

  3. List of extinction events - Wikipedia

    en.wikipedia.org/wiki/List_of_extinction_events

    Cambrian–Ordovician extinction event: 488 Ma: Kalkarindji Large Igneous Province? [42] Dresbachian extinction event: 502 Ma: End-Botomian extinction event: 517 Ma: Precambrian: End-Ediacaran extinction: 542 Ma: Anoxic event [43] Great Oxygenation Event: 2400 Ma: Rising oxygen levels in the atmosphere due to the development of photosynthesis ...

  4. Late Ordovician mass extinction - Wikipedia

    en.wikipedia.org/.../Late_Ordovician_mass_extinction

    The Late Ordovician mass extinction (LOME), sometimes known as the end-Ordovician mass extinction or the Ordovician-Silurian extinction, is the first of the "big five" major mass extinction events in Earth's history, occurring roughly 445 million years ago (Ma). [1] It is often considered to be the second-largest known extinction event just ...

  5. Cretaceous–Paleogene extinction event - Wikipedia

    en.wikipedia.org/wiki/Cretaceous–Paleogene...

    The Cretaceous–Paleogene (K–Pg) extinction event, [ a ] also known as the K–T extinction, [ b ] was the mass extinction of three-quarters of the plant and animal species on Earth [ 2 ][ 3 ] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most other tetrapods weighing more than 25 kilograms ...

  6. Permian–Triassic extinction event - Wikipedia

    en.wikipedia.org/wiki/Permian–Triassic...

    Permian–Triassic boundary at Frazer Beach in New South Wales, with the End Permian extinction event located just above the coal layer [2]. Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, [3] the Latest Permian extinction event, [4] the End-Permian extinction event, [5] [6] and colloquially ...

  7. Triassic–Jurassic extinction event - Wikipedia

    en.wikipedia.org/wiki/Triassic–Jurassic...

    The Triassic–Jurassic (Tr-J) extinction event (TJME), often called the end-Triassic extinction, was a Mesozoic extinction event that marks the boundary between the Triassic and Jurassic periods, 201.4 million years ago, and is one of the top five major extinction events of the Phanerozoic eon, [ 1 ] profoundly affecting life on land and in ...

  8. Siberian Traps - Wikipedia

    en.wikipedia.org/wiki/Siberian_Traps

    The Siberian Traps(Russian: Сибирские траппы, romanized: Sibirskiye trappy) are a large region of volcanic rock, known as a large igneous province, in Siberia, Russia. The massive eruptive event that formed the trapsis one of the largest known volcanicevents in the last 500 millionyears. The eruptions continued for roughly two ...

  9. Late Devonian extinction - Wikipedia

    en.wikipedia.org/wiki/Late_Devonian_extinction

    The Late Devonian extinction consisted of several extinction events in the Late Devonian Epoch, which collectively represent one of the five largest mass extinction events in the history of life on Earth. The term primarily refers to a major extinction, the Kellwasser event, also known as the Frasnian-Famennian extinction, [ 1 ] which occurred ...