Name formalityFormal
Name ratified1996
Usage information
Celestial bodyEarth
Regional usageGlobal (ICS)
Time scale(s) usedICS Time Scale
Chronological unitEpoch
Stratigraphic unitSeries
Time span formalityFormal
Lower boundary definitionFAD of the Conodont Jinogondolella nanginkensis
Lower boundary GSSPStratotype Canyon, Guadalupe Mountains, Texas, USA
31°52′36″N 104°52′36″W / 31.8767°N 104.8768°W / 31.8767; -104.8768
Lower GSSP ratified2001[2]
Upper boundary definitionFAD of the Conodont Clarkina postbitteri postbitteri
Upper boundary GSSPPenglaitan Section, Laibin, Guangxi, China
23°41′43″N 109°19′16″E / 23.6953°N 109.3211°E / 23.6953; 109.3211
Upper GSSP ratified2004[3]

The Guadalupian is the second and middle series/epoch of the Permian. The Guadalupian was preceded by the Cisuralian and followed by the Lopingian. It is named after the Guadalupe Mountains of New Mexico and Texas, and dates between 272.95 ± 0.5 – 259.1 ± 0.4 Mya.[4][5] The series saw the rise of the therapsids, a minor extinction event called Olson's Extinction and a significant mass extinction called the end-Capitanian extinction event.

The Guadalupian was previously known as the Middle Permian.

  1. ^ "Chart/Time Scale". International Commission on Stratigraphy.
  2. ^ "GSSP for Roadian Stage". International Commission on Stratigraphy. International Commission on Stratigraphy. Retrieved 13 December 2020.
  3. ^ Jin, Yugan; Shen, Shuzhong; Henderson, Charles; Wang, Xiangdong; Wang, Wei; Wang, Yue; Cao, Changqun; Shang, Qinghua (December 2006). "The Global Stratotype Section and Point (GSSP) for the boundary between the Capitanian and Wuchiapingian Stage (Permian)" (PDF). Episodes. 29 (4): 253–262. doi:10.18814/epiiugs/2006/v29i4/003. Retrieved 13 December 2020.
  4. ^ "Linked Data - Object Viewer". Retrieved 9 January 2022.
  5. ^ Gradstein, Felix M.; Ogg, James G.; Smith, Alan G. (2004). A Geologic Time Scale 2004. ISBN 978-0-521-78673-7.

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