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Period,Trigger,Date,Probable cause
,End-Ediacaran extinction,542 Ma,Anoxic event
Quaternary,Holocene extinction,"10,000 BC – Ongoing",Humans
Permian,Permian–Triassic extinction event,,"volcanism, the Wilkes Land Crater, an Anoxic event, an Ice age"
Cambrian,Cambrian–Ordovician extinction event,488 Ma,
Permian,Olson's Extinction,,climate change
Ordovician,Late Ordovician mass extinction,,"Global cooling, sea level drop, a Gamma-ray burst, global warming, volcanism, anoxia"
Quaternary,Quaternary extinction event,"640,000, 74,000, and 13,000 years ago","climate changes, massive volcanic eruptions, humans"
,Middle Miocene disruption,,Climate change
Cretaceous,Aptian extinction,117 Ma,volcanism
Cretaceous,Cenomanian-Turonian boundary event,,"underwater volcanism, global warming, acidic oceans"
Silurian,Mulde event,,Global drop in sea level
Jurassic,Toarcian turnover,183 Ma,the Karoo-Ferrar Igneous Provinces
Devonian,Late Devonian extinction,,"Viluy Traps, Woodleigh Impactor"
Precambrian,Great Oxygenation Event,,"Rising oxygen levels, Snowball Earth event"
Triassic,Triassic–Jurassic extinction event,,"climate changes, volcanism"
Silurian,Ireviken event,,"Deep-ocean anoxia, Milankovitch cycles"
Cretaceous,Cretaceous–Paleogene extinction event,66 Ma,"Chicxulub impactor, volcanism"
Triassic,Carnian Pluvial Event,,"Wrangellia flood basalts, the uplift of the Cimmerian orogeny"
Permian,End-Capitanian extinction event,260 Ma,"Volcanism, global cooling"
Carboniferous,Carboniferous rainforest collapse,305 Ma,"climate changes, volcanism"
,Eocene–Oligocene extinction event,33.9 Ma,"global cooling, polar glaciation, falling sea levels, the Popigai impactor"
Silurian,Lau event,420 Ma,Changes in sea level and chemistry
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