PBDB Interval Range

323.4 - 286 Ma

International Chronostratigraphic Timescale			Carboniferous of North America	Permian of North America
Permian	Lopingian	Changhsingian				251.902
	Lopingian	Wuchiapingian				254.14
	Guadalupian	Capitanian		Capitanian		259.51
		Wordian		Wordian		264.28
		Roadian		Roadian		266.9
	Cisuralian	Kungurian		Leonardian	Cathedralian	274.4
		Kungurian			Hessian	282
		Artinskian			Hessian	283.3
		Artinskian		Wolfcampian	Lenoxian	286
		Sakmarian			Lenoxian	290.1
		Asselian	Bursumian †		Nealian	293.52
Carboniferous	Pennsylvanian	Gzhelian	Virgilian			298.9
		Kasimovian	Missourian			303.7
		Kasimovian	Desmoinesian			306
		Moscovian	Desmoinesian			307
		Moscovian	Atokan			312.8
		Bashkirian	Atokan			315.2
		Bashkirian	Morrowan			318.6
	Mississippian	Serpukhovian	Chesterian			323.4
		Visean	Chesterian			330.3
			Meramecian			335.4 *
			Osagean			342.9 *
		Tournaisian	Osagean			346.7
		Tournaisian	Kinderhookian			351.9 *
						358.86