Guadalupian

Guadalupian
273.01 ± 0.14 – 259.51 ± 0.21 Ma PreꞒ Ꞓ O S D C P T J K Pg N
A map of Earth as it appeared 265 million years ago during the Guadalupian Epoch, Wordian Age
Chronology
−300 — – −295 — – −290 — – −285 — – −280 — – −275 — – −270 — – −265 — – −260 — – −255 — – −250 — Paleozoic Mz C Permian Tr Pennsylvanian Cisuralian Guadalup Lopin Early Triassic Asselian Sakmarian Artinskian Kungurian Roadian Wordian Capitanian Wuchiapingian Changhsingian       ← Permian-Triassic mass extinction event ← end-Capitanian extinction event ← Olson's Extinction Subdivision of the Permian according to the ICS, as of 2023.[1] 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 / 31.8767; -104.8768
Lower GSSP ratified	2001[2]
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 / 23.6953; 109.3211
Upper GSSP ratified	2004[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.