System	Series	Stage	Age (Ma)
Triassic	Lower	Induan	younger
Permian	Lopingian	Changhsingian	251.0–253.8
		Wuchiapingian	253.8–260.4
	Guadalupian	Capitanian	260.4–265.8
		Wordian	265.8–268.0
		Roadian	268.0–270.6
	Cisuralian	Kungurian	270.6–275.6
		Artinskian	275.6–284.4
		Sakmarian	284.4–294.6
		Asselian	294.6–299.0
Carboniferous	Pennsylvanian	Gzhelian	older
Subdivision of the Permian system according to the IUGS, as of July 2009.

In the geologic timescale, the Kungurian is an age or stage of the Permian. It is the latest or upper of four subdivisions of the Cisuralian epoch or series. The Kungurian lasted between 275.6 ± 0.7 and 270.6 ± 0.7 million years ago (Ma). It was preceded by the Artinskian and followed by the Roadian.^[1]

Contents 1 Stratigraphy 2 References 2.1 Notes 2.2 Literature 2.3 External links

[edit] Stratigraphy

The Kungurian is named after the Russian city of Kungur in the vicinity of Perm. The stage was introduced into scientific literature by Alexander Stuckenberg in 1890.^[2]

The base of the Kungurian stage is defined as the place in the stratigraphic record where fossils of conodont species Neostreptognathodus pnevi and Neostreptognathodus exculptus first appear. As of 2009, there was no agreement yet on a global reference profile (a GSSP) for the base of the Kungurian. The top of the Kungurian (the base of the Roadian and the Guadalupian series) is defined as the place in the stratigraphic record where fossils of conodont species Jinogondolella nanginkensis first appear.

The Kungurian contains three conodont biozones:

• zone of Neostreptognathodus sulcoplicatus
• zone of Neostreptognathodus prayi
• zone of Neostreptognathodus pnevi

[edit] References

[edit] Notes

[edit] Literature

• Chuvashov, B.I.; Chernykh, V.V.; Leven, E.Y.; Davydov, V.I.; Bowring, S.A.; Ramezani, J.; Glenister, B.F.; Henderson, C.M.; Schiappa, T.A.; Northrup, C.J.; Snyder, W.S.; Spinosa, C. & Wardlaw, B.R.; 2002: Progress report on the base of the Artinskian and base of the Kungurian by the Cisuralian Working Group, Permophiles 41: pp 13-16.
• Gradstein, F.M.; Ogg, J.G. & Smith, A.G.; 2004: A Geologic Time Scale 2004, Cambridge University Press

[edit] External links

• GeoWhen Database - Kungurian
• Upper Paleozoic stratigraphic chart at the website of the subcommission for stratigraphic information of the ICS