PBDB Interval Range

509.7 - 499.5 Ma

International Chronostratigraphic Timescale			Cambrian of North America		Cambrian of Siberia
Cambrian	Furongian	Stage 10		Franconian †/Dresbachian/Millardan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	486.85
		Stage 10	Sunwaptan					488.9 *
		Jiangshanian						491
					Aksaian			491.5
					Sakian			492.8
			Steptoean					493.5
		Paibian						494.2
		Paibian					Ensyan †/Maduan/Nganasanian	495
	Miaolingian	Guzhangian	Marjumian	Albertian †	Ayusokkanian			497
		Guzhangian			Mayan/Menevian			499.5
		Drumian			Mayan/Menevian			500.5
		Wuliuan	Topazan		Amgan/Solvan			504.5
		Wuliuan	Delamaran					505.3 *
	Series 2	Stage 4		Waucoban †				506.5
					Toyonian	Lenian †		508.2 *
			Dyeran		Toyonian			509.7 *
					Botomian			512.1 *
		Stage 3						514.5
			Montezuman					515.3
			Montezuman		Atdabanian			516
			Begadean		Atdabanian			520
	Terreneuvian	Stage 2			Tommotian			521
		Stage 2			Nemakit-Daldynian			525.5
		Fortunian			Nemakit-Daldynian	Manykaian †		529
								538.8