PBDB Interval Range

280.4 - 274.4 Ma

International Chronostratigraphic Timescale			Permian of the Russian Platform		Permian of the Pamirs
Permian	Lopingian	Changhsingian			Dorashamian	251.902
		Wuchiapingian			Dzhulfian	254.14
		Wuchiapingian	Tatarian	Vyatkian	Dzhulfian	256.8 *
	Guadalupian	Capitanian		Severodvinian	Midian	259.51
		Wordian		Urzhumian	Midian	264.28
		Roadian	Kazanian	Povolzhian	Murgabian	266.9 *
		Roadian	Kazanian	Sokian	Murgabian	271.6 *
	Cisuralian	Kungurian	Kungurian	Irenian/Ufimian	Kubergandian	274.4
				Filipovian	Kubergandian	277.3 *
				Saraninian	Bolorian	280.4 *
		Artinskian	Artinskian	Sarginian	Bolorian	283.3
				Irginian	Yakhtashian	285.8 *
				Burtsevian	Yakhtashian	287.7 *
		Sakmarian	Sakmarian	Sterlitamakian	Sakmarian	290.1
		Sakmarian	Sakmarian	Tastubian	Sakmarian	291.7 *
		Asselian	Asselian	Shikhanian	Asselian	293.52
				Uskalykian		294.8
				Surenian		297.5
						298.9