Search results
Results From The WOW.Com Content Network
Late Ordovician mass extinction: 445-444 Ma Global cooling and sea level drop, and/or global warming related to volcanism and anoxia [43] Cambrian: Cambrian–Ordovician extinction event: 488 Ma: Kalkarindji Large Igneous Province? [44] Dresbachian extinction event: 502 Ma: End-Botomian extinction event: 517 Ma: Precambrian: End-Ediacaran ...
These two closely spaced extinction events collectively eliminated about 19% of all families, 50% of all genera [6] and at least 70% of all species. [11] Sepkoski and Raup (1982) [ 2 ] did not initially consider the Late Devonian extinction interval ( Givetian , Frasnian, and Famennian stages) to be statistically significant. [ 2 ]
A different culprit, however, does explain several smaller extinction episodes and at least two mass extinctions, including the largest on record. Apocalyptic volcanoes that caused global warming
Wikipedia categories named after mass extinctions (3 C) D. Documentary films about extinctions (5 P) P. Phanerozoic extinctions (5 C) T. Mass extinction timelines (3 ...
Permian–Triassic boundary at Frazer Beach in New South Wales, with the End Permian extinction event located just above the coal layer [2]. Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, [3] the Latest Permian extinction event, [4] the End-Permian extinction event, [5] [6] and colloquially ...
The mass extinction over the last 500,000 years marks major climatic and moderate productivity changes. Between 200 and 400 kyr before the K–T boundary, surface and deep waters warmed rapidly by 3–4 °C and then cooled again during the last 100 kyr of the Late Cretaceous.
Artist's rendering of the Chicxulub asteroid entering Earth's atmosphere 66 million years ago, triggering events that caused a mass extermination. Roger Harris/Science Photo library via Getty ...
The Capitanian mass extinction event, also known as the end-Guadalupian extinction event, [2] the Guadalupian-Lopingian boundary mass extinction, [3] the pre-Lopingian crisis, [4] or the Middle Permian extinction, was an extinction event that predated the infamous end-Permian extinction.