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• Late_Devonian_extinction abstract "The Late Devonian extinction was one of five major extinction events in the history of the Earth's biota. A major extinction, the Kellwasser Event, occurred at the boundary that marks the beginning of the last phase of the Devonian period, the Famennian faunal stage, (the Frasnian-Famennian boundary), about 374 Ma (million years ago). Overall, 19% of all families and 50% of all genera went extinct. A second, distinct mass extinction, the Hangenberg Event, closed the Devonian period. Although it is clear that there was a massive loss of biodiversity in the Later Devonian, the extent of time during which these events took place is uncertain, with estimates ranging from 500,000 to 25 million years, extending from the mid-Givetian to the end-Famennian. Nor is it clear whether it concerned two sharp mass extinctions or a series of smaller extinctions, though the latest research suggests multiple causes and a series of distinct extinction pulses through an interval of some three million years. Some consider the extinction to be as many as seven distinct events, spread over about 25 million years, with notable extinctions at the ends of the Givetian, Frasnian, and Famennian stages.By the late Devonian, the land had been colonized by plants and insects. In the oceans, there were massive reefs built by corals and stromatoporoids. Euramerica and Gondwana were beginning to converge into what would become Pangaea. The extinction seems to have only affected marine life. Hard-hit groups include brachiopods, trilobites, and reef-building organisms; the latter almost completely disappeared, with coral reefs only returning upon the evolution of modern corals during the Mesozoic. The causes of these extinctions are unclear. Leading theories include changes in sea level and ocean anoxia, possibly triggered by global cooling or oceanic volcanism. The impact of a comet or another extraterrestrial body has also been suggested. Some statistical analysis suggests that the decrease in diversity was caused more by a decrease in speciation than by an increase in extinctions. This might have been caused by invasions of cosmopolitan species, rather than any single event. Surprisingly, jawed vertebrates seem to have been unaffected by the loss of reefs or other aspects of the Kellwasser event, while agnathans were in decline long before the end of the Frasnian.".
• Late_Devonian_extinction wikiPageExternalLink session_8723.htm.
• Late_Devonian_extinction wikiPageExternalLink devmass.html.
• Late_Devonian_extinction wikiPageExternalLink devonian.htm.
• Late_Devonian_extinction wikiPageExternalLink massExtinction.html.
• Late_Devonian_extinction wikiPageExternalLink devonian.html.
• Late_Devonian_extinction wikiPageExternalLink watch?v=SYFLF-Arsis.
• Late_Devonian_extinction wikiPageID "1350609".
• Late_Devonian_extinction wikiPageRevisionID "600366753".
• Late_Devonian_extinction hasPhotoCollection Late_Devonian_extinction.
• Late_Devonian_extinction subject Category:Biology.
• Late_Devonian_extinction subject Category:Climate_forcing_agents.
• Late_Devonian_extinction subject Category:Climate_history.
• Late_Devonian_extinction subject Category:Devonian.
• Late_Devonian_extinction subject Category:Evolutionary_biology.
• Late_Devonian_extinction subject Category:Extinction_events.
• Late_Devonian_extinction subject Category:Graphical_timelines.
• Late_Devonian_extinction subject Category:Paleontology.
• Late_Devonian_extinction subject Category:Planetary_science.
• Late_Devonian_extinction type Abstraction100002137.
• Late_Devonian_extinction type Chronology106503224.
• Late_Devonian_extinction type Communication100033020.
• Late_Devonian_extinction type Event100029378.
• Late_Devonian_extinction type Evidence106643408.
• Late_Devonian_extinction type ExtinctionEvents.
• Late_Devonian_extinction type GraphicalTimelines.
• Late_Devonian_extinction type Indication106797169.
• Late_Devonian_extinction type PsychologicalFeature100023100.
• Late_Devonian_extinction type Record106647206.
• Late_Devonian_extinction type Timeline106504965.
• Late_Devonian_extinction type WrittenRecord106502378.
• Late_Devonian_extinction type YagoPermanentlyLocatedEntity.
• Late_Devonian_extinction comment "The Late Devonian extinction was one of five major extinction events in the history of the Earth's biota. A major extinction, the Kellwasser Event, occurred at the boundary that marks the beginning of the last phase of the Devonian period, the Famennian faunal stage, (the Frasnian-Famennian boundary), about 374 Ma (million years ago). Overall, 19% of all families and 50% of all genera went extinct. A second, distinct mass extinction, the Hangenberg Event, closed the Devonian period.".
• Late_Devonian_extinction label "Extinción masiva del Devónico".
• Late_Devonian_extinction label "Extinction du Dévonien".
• Late_Devonian_extinction label "Extinção do Devoniano Superior".
• Late_Devonian_extinction label "Laat-Devonische extinctie".
• Late_Devonian_extinction label "Late Devonian extinction".
• Late_Devonian_extinction label "Wymieranie dewońskie".
• Late_Devonian_extinction label "Девонское вымирание".
• Late_Devonian_extinction label "انقراض الديفوني المتأخر".
• Late_Devonian_extinction sameAs Vymírání_v_pozdním_devonu.
• Late_Devonian_extinction sameAs Extinción_masiva_del_Devónico.
• Late_Devonian_extinction sameAs Extinction_du_Dévonien.
• Late_Devonian_extinction sameAs Laat-Devonische_extinctie.
• Late_Devonian_extinction sameAs Wymieranie_dewońskie.
• Late_Devonian_extinction sameAs Extinção_do_Devoniano_Superior.
• Late_Devonian_extinction sameAs m.04vwkg.
• Late_Devonian_extinction sameAs Q678023.
• Late_Devonian_extinction sameAs Q678023.
• Late_Devonian_extinction sameAs Late_Devonian_extinction.
• Late_Devonian_extinction wasDerivedFrom Late_Devonian_extinction?oldid=600366753.
• Late_Devonian_extinction isPrimaryTopicOf Late_Devonian_extinction.