Editing Permian (section)

=== Guadalupian ===
The Guadalupian Series is named after the [[Guadalupe Mountains]] in Texas and New Mexico, where extensive marine sequences of this age are exposed. It was named by [[George Herbert Girty]] in 1902.<ref name="Glenister-1999">Glenister, B.F., Wardlaw, B.R. et al. 1999. [https://permian.stratigraphy.org/files/Roadian-Capitanian.pdf Proposal of Guadalupian and component Roadian, Wordian and Capitanian stages as international standards for the middle Permian series] {{Webarchive|url=https://web.archive.org/web/20210416232350/https://permian.stratigraphy.org/files/Roadian-Capitanian.pdf |date=2021-04-16 }}. ''Permophiles'', '''34''', 3–11.</ref>

The Roadian was named in 1968 in reference to the Road Canyon Member of the [[Word Formation]] in Texas.<ref name="Glenister-1999" /> The GSSP for the base of the Roadian is located 42.7m above the base of the [[Cutoff Formation]] in Stratotype Canyon, Guadalupe Mountains, Texas, and was ratified in 2001. The beginning of the stage is defined by the first appearance of [[Jinogondolella|''Jinogondolella nankingensis'']].<ref name="Lucas-2018" />

The Wordian was named in reference to the Word Formation by [[Johan August Udden]] in 1916, Glenister and Furnish in 1961 was the first publication to use it as a chronostratigraphic term as a substage of the Guadalupian Stage.<ref name="Glenister-1999" /> The GSSP for the base of the Wordian is located in Guadalupe Pass, Texas, within the sediments of the Getaway Limestone Member of the [[Cherry Canyon Formation]], which was ratified in 2001. The base of the Wordian is defined by the first appearance of the conodont ''Jinogondolella aserrata.''<ref name="Lucas-2018" />

The Capitanian is named after the Capitan Reef in the Guadalupe Mountains of Texas, named by [[George Burr Richardson]] in 1904, and first used in a chronostratigraphic sense by Glenister and Furnish in 1961 as a substage of the Guadalupian Stage.<ref name="Glenister-1999" /> The Capitanian was ratified as an international stage by the ICS in 2001. The GSSP for the base of the Capitanian is located at Nipple Hill in the southeast Guadalupe Mountains of Texas, and was ratified in 2001, the beginning of the stage is defined by the first appearance of ''Jinogondolella postserrata.<ref name="Lucas-2018" />''