: Paléoclimatologie: Kazanian

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Kazanian

In the geologic timescale, the Kazanian or Wuchiapingian or Wujiapingian in the Liangshan area of Hanzhong, Shaanxi Province is an age or stage of the Permian. It is also the lower or earlier of two subdivisions of the Lopingian Epoch or Series. The Wuchiapingian spans the time between 259.51 and 254.14 million years ago (Ma). It was preceded by the Capitanian and followed by the Changhsingian. The base of the Wuchiapingian Stage is defined as the place in the stratigraphic record where the conodont species Clarkina postbitteri postbitteri first appears. A global reference profile for this boundary (a GSSP) is located near Laibin in the Chinese province of Guangxi. The top of the Wuchiapingian (the base of the Changhsingian) is at the first appearance of conodont species Clarkina wangi. An extinction pulse occurred during the Wuchiapingian; faunas were recovering when another larger extinction pulse, the Permian–Triassic extinction event devastated life. (Adapted from: https://en.wikipedia.org/wiki/Wuchiapingian)

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