PBDB Interval Range

306 - 303.7 Ma

International Chronostratigraphic Timescale			Carboniferous of North America	Carbo-Permian of the Russian Platform
					287.6
Carboniferous	Pennsylvanian	Gzhelian	Virgilian	Rusavkinian	298.9 *
		Kasimovian	Missourian	Dorogomilovian	303.7
				Khamovnikian	304.8
				Krevyakinian	305.8 *
			Desmoinesian	Krevyakinian	306
		Moscovian		Myachkovian	307
				Podolskian	308.9 *
				Kashirian	311.46 *
			Atokan	Kashirian	312.8
				Vereian	313.8
				Melekessian	314.8
		Bashkirian		Melekessian	315.2
				Cheremshanian	317
			Morrowan	Cheremshanian	318.6
				Prikamian	318.7
				Severokeltmian	320
				Krasnopolyanian	321.4
				Voznesenian	322.1
	Mississippian	Serpukhovian	Chesterian	Zapaltjubian	323.4
				Protvian	324.5 *
				Steshevian	326.9 *
				Tarusian	329.1 *
		Visean		Venevian	330.3
				Mikhailovian	332 *
				Aleksinian	333.8 *
			Meramecian	Aleksinian	335.4 *
				Tulian	335.9 *
				Bobrikian	339.9 *
			Osagean	Bobrikian	342.9 *
				Radaevkian	343.4 *
		Tournaisian		Kosvian	346.7
				Kizelian	350.7 *
			Kinderhookian	Cherepetian	351.9 *
				Karakubian	354.4 *
				Upinian	356.3 *
				Malevkian	357.6 *
				Gumerovian	358 *
					358.86