Extinction Event - Lesser Extinctions

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?