Guadalupian

Guadalupian
Guadalupian
Chronology
←	Permian-Triassic mass extinction event
←	end-Capitanian extinction event
←	Olson's Extinction
	Subdivision of the Permian according to the ICS, as of 2022.; Vertical axis scale: millions of years ago.;
Etymology
Name formality	Formal
Name ratified	1996
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Time scale(s) used	ICS Time Scale
Definition
Chronological unit	Epoch
Stratigraphic unit	Series
Time span formality	Formal
Lower boundary definition	FAD of the Conodont Jinogondolella nanginkensis
Lower boundary GSSP	Stratotype Canyon, Guadalupe Mountains, Texas, USA; 31°52′36″N 104°52′36″W / 31.8767°N 104.8768°W
Lower GSSP ratified	2001
Upper boundary definition	FAD of the Conodont Clarkina postbitteri postbitteri
Upper boundary GSSP	Penglaitan Section, Laibin, Guangxi, China; 23°41′43″N 109°19′16″E / 23.6953°N 109.3211°E
Upper GSSP ratified	2004

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.

^ "Chart/Time Scale". www.stratigraphy.org. International Commission on Stratigraphy.
^ "GSSP for Roadian Stage". International Commission on Stratigraphy. Retrieved 13 December 2020.
^ 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.
^ "Linked Data - Object Viewer". vocabs.ardc.edu.au. Retrieved 9 January 2022.
^ Gradstein, Felix M.; Ogg, James G.; Smith, Alan G. (2004). A Geologic Time Scale 2004. Cambridge University Press. ISBN 978-0-521-78673-7.