Always private
DuckDuckGo never tracks your searches.
Learn More
You can hide this reminder in Search Settings
All regions
Argentina
Australia
Austria
Belgium (fr)
Belgium (nl)
Brazil
Bulgaria
Canada (en)
Canada (fr)
Catalonia
Chile
China
Colombia
Croatia
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hong Kong
Hungary
Iceland
India (en)
Indonesia (en)
Ireland
Israel (en)
Italy
Japan
Korea
Latvia
Lithuania
Malaysia (en)
Mexico
Netherlands
New Zealand
Norway
Pakistan (en)
Peru
Philippines (en)
Poland
Portugal
Romania
Russia
Saudi Arabia
Singapore
Slovakia
Slovenia
South Africa
Spain (ca)
Spain (es)
Sweden
Switzerland (de)
Switzerland (fr)
Taiwan
Thailand (en)
Turkey
Ukraine
United Kingdom
US (English)
US (Spanish)
Vietnam (en)
Safe search: moderate
Strict
Moderate
Off
Any time
Any time
Past day
Past week
Past month
Past year
  1. 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, which occurred around 372 million years ago, at the boundary between the Frasnian age and the Famennian age, the last age in the Devonian Period. Overall, 19% of all families and 50% of all genera became extinct. A second mass extinction called the Hangenberg event, also known as the end-Devonian extinction, occurred 359 million years ago, bringing an end to the Famennian and Devonian, as the world transitioned into the Carboniferous Period. Wikipedia

    Was this helpful?
  2. en.wikipedia.org

    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 around 372 million years ago, at the boundary between ...
  3. en.wikipedia.org

    The Devonian (/ d ə ˈ v oʊ n i. ən, d ɛ-/ də-VOH-nee-ən, deh-) [9] [10] is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at 419.62 million years ago (), to the beginning of the succeeding Carboniferous period at 358.86 Ma. It is the fourth period of both the Paleozoic and the ...
  4. Was this helpful?
  5. samnoblemuseum.ou.edu

    The end-Frasnian extinction happened about 375 million years ago. The oldest of the three extinctions, towards the end of a time interval called the Givetian, occurred about 10 million years before the Frasnian event. ... In the Late Devonian, large trees evolved and formed the first forests. As plant life expanded, they used up more carbon ...
  6. britannica.com

    Devonian extinctions, a series of mass extinction events primarily affecting the marine communities of the Devonian Period (419.2 million to 359 million years ago). At present it is not possible to connect this series definitively with any single cause. It is probable that they may record a combination of several stresses—such as excessive sedimentation, rapid global warming or cooling ...
  7. discovermagazine.com

    A drawing of Elginerpeton pancheni, an early tetrapod from the Late Devonian period. (Credit: Nobu Tamura/CC by 3.0/Wikimedia Commons) After the Devonian extinction ended, ... The Devonian extinction ushered in not only the land-bound tetrapods, but also the animals that command the marine vertebrate world to this day: ray-finned (or bony) fish ...
  8. storymaps.arcgis.com

    Late Devonian Mass Extinction . Lasting longer than the first mass extinction, the Devonian mass extinction lasted 20 million years. This event took place 383 million years ago and killed 75% of all species on earth. The Devonian extinction was drawn out over several pulses that lowered the oxygen levels, ending with the Kellwasser event.
  9. content-calpoly-edu.s3.amazonaws.com

    The Late Devonian extinction was one of five major extinction events in the history of life on Earth. A major extin ction, the Kellwasser event , occurred at the boundary that marks the beginning of the last phase of the Devonian period, the Famennian faunal stage (the ...
  10. onlinelibrary.wiley.com

    The Late Devonian mass extinction, which occurred 371.9 million years ago (Ma), is one of the 'Big Five' mass extinctions in Earth history. Suggested main proximate causes of the crisis include oceanic anoxia and climate swings. The severe loss of biodiversity affected both marine and terrestrial ecosystems and animal (especially metazoan ...
  11. discovermagazine.com

    Extended periods of marine anoxia — a lack of oxygen in the water — characterized the Late Devonian Mass Extinction. The two most pronounced periods are known as the Kellwasser event, which occurred around 372 million years ago, and the Hanenberg Crisis, which occurred at the end of the Devonian period, around 359 million years ago.Organisms on the bottom of the food chain, algae and ...
  12. worldatlas.com

    The three events are responsible for the extinction of 70-80% of all animal species during the Devonian Period and about 19% of the families of Devonian animals. However, the Late Devonian extinction is the lowest-ranked extinction event among the "Big Five" extinction events in the Earth's history. The Extinction Period and Timing

    Can’t find what you’re looking for?

    Help us improve DuckDuckGo searches with your feedback

Custom date rangeX