PBDB Interval Range

305.9 - 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	305.9 *
		Moscovian		Myachkovian	307
				Podolskian	308.9 *
				Kashirian	311.4 *
			Atokan	Kashirian	312.7 *
				Vereian	313.8
				Melekessian	314.8
		Bashkirian		Melekessian	315.2
				Cheremshanian	316.9 *
			Morrowan	Cheremshanian	318.4 *
				Prikamian	318.6 *
				Severokeltmian	319.9 *
				Krasnopolyanian	321.2 *
				Voznesenian	321.9 *
	Mississippian	Serpukhovian	Chesterian	Zapaltjubian	323.2
				Protvian	324.4 *
				Steshevian	326.8 *
				Tarusian	329 *
		Visean		Venevian	330.9
				Mikhailovian	331.9 *
				Aleksinian	333.7 *
			Meramecian	Tulian	335.8 *
			Meramecian	Bobrikian	339.9 *
			Osagean	Bobrikian	343.1 *
				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 *
					358.9