Changhsingian

alternative Changxingian · alternative Changshingian

1. biologyA subdivision of the Permian period.

   There is no evidence for a large drop in PCO2, and independent proxy data indicate only a minor temperature decrease of a few degrees Celsius during the Changhsingian (22), suggesting that these mechanisms alone cannot explain the pH increase (fig. S5).

   2015 April 10, M. O. Clarkson, S. A. Kasemann, R. A. Wood, T. M. Lenton, S. J. Daines, S. Richoz, F. Ohnemueller, A. Meixner, S. W. Poulton, E. T. Tipper, “Ocean acidification and the Permo-Triassic mass extinction”, in Science, volume 348, number 6231, →ISSN, pages 229–230

   1 more example

   Anoxic/euxinic benthic marine conditions prevailed throughout the middle Wuchiapingian to the early Changhsingian at Shangsi, which persisted for 3.9 Myr (256.974–253.073 Ma). This long-term middle Wuchiapingian-early Changhsingian anoxia event could be correlated both regionally and globally, and was caused by paleogeographic restrictions, relative high sea levels, high marine productivities, and possible global climate changes.

   2022 January 11, Li Yuan, “Investigating benthic marine redox conditions from late Permian to earliest Triassic”, in Phys.org, archived from the original on 11 Jan 2022, Earth Sciences