Lesser Extinctions
Lesser extinction events include:
Period | Start Date | Extinction | Date | Cause |
---|---|---|---|---|
Quaternary extinction event | 50 ka to now | |||
Pliocene | Pliocene–Pleistocene boundary marine extinction | 2 Ma |
Supernova in the Scorpius-Centaurus OB association |
|
Neogene | 23.03 | Middle Miocene disruption | 14.5 Ma | Nördlinger Ries bolide impact? Volcanoes in African Rift Valley |
Eocene–Oligocene extinction event | 33.9 Ma | Volcanoes? Chesapeake Bay and Popigai crater bolide impacts? | ||
Cretaceous | 145 | Aptian extinction | 117 Ma | Rahjamal Traps volcanism episode in Bengal? |
End-Jurassic extinction | 145.5 Ma | |||
Jurassic | 201.3 | Toarcian turnover | 183 Ma | |
Permian | 298.9 | Olson's Extinction | 270 Ma | |
Carboniferous | 358.9 | Carboniferous Rainforest Collapse | 318 Ma | Climate change |
End-Silurian extinction event | 416 Ma | |||
Lau event | 420 Ma | |||
Mulde event | 424 Ma | Global drop in sea level? | ||
Silurian | 443.4 | Ireviken event | 428 Ma | Deep-ocean anoxia? |
Cambrian–Ordovician extinction event | 488 Ma | Glaciation? Depletion of oxygen in marine waters? | ||
Dresbachian extinction | 502 Ma | |||
Cambrian | 541 | End-Botomian extinction event | 517 Ma | |
Precambrian | 4567.17 | End-Ediacaran extinction | 542 Ma | Ocean anoxia? |
Read more about this topic: Extinction Event
Famous quotes containing the word lesser:
“Every normal person, in fact, is only normal on the average. His ego approximates to that of the psychotic in some part or other and to a greater or lesser extent.”
—Sigmund Freud (18561939)
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