Changhsingian
In the geologic time scale, the Changhsingian or Changxingian is the latest age or uppermost stage of the Permian. It is also the upper or latest of two subdivisions of the Lopingian Epoch or Series. The Changhsingian lasted from 254.14 to 251.9 Ma ago. It is preceded by the Wuchiapingian age/stage and is followed by the Induan age/stage (Early Triassic epoch).
| Changhsingian | |||||||||||||
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Bellerophon Formation, Dolomites, Italy | |||||||||||||
| Chronology | |||||||||||||
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| Etymology | |||||||||||||
| Name formality | Formal | ||||||||||||
| Name ratified | 1981 | ||||||||||||
| Alternate spelling(s) | Changxingian | ||||||||||||
| Usage information | |||||||||||||
| Celestial body | Earth | ||||||||||||
| Regional usage | Global (ICS) | ||||||||||||
| Time scale(s) used | ICS Time Scale | ||||||||||||
| Definition | |||||||||||||
| Chronological unit | Age | ||||||||||||
| Stratigraphic unit | Stage | ||||||||||||
| Time span formality | Formal | ||||||||||||
| Lower boundary definition | Meishan, Zhejiang, China | ||||||||||||
| Lower boundary GSSP | FAD of the Conodont Clarkina wangi 31.0819°N 119.7064°E | ||||||||||||
| Lower GSSP ratified | 2005 | ||||||||||||
| Upper boundary definition | FAD of the Conodont Hindeodus parvus. | ||||||||||||
| Upper boundary GSSP | Meishan, Zhejiang, China 31.0798°N 119.7058°E | ||||||||||||
| Upper GSSP ratified | 2001 | ||||||||||||
The greatest mass extinction in the Phanerozoic eon, the Permian–Triassic extinction event, occurred around the end of this age.
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