ERA	PERIOD	sub-PERIOD	EPOCH	sub	STAGE	alternate	myBP
Cenozoic	Quaternary	- - - - -	Holocene	- -	- - - - -	- - - - -	0.01
			Pleistocene	- -	- - - - -	- - - - -	1.6-1.8
	Tertiary	Neogene	Pliocene	- -	- - - - -	- - - - -	5-5.2
			Miocene	Late	Messinian	- - - - -	7.5
					Tortonian	- - - - -	10
					Serravallian	- - - - -	12
				Mid	Langhian, late	- - - - -	15
					Langhian, early	- - - - -	18
				Early	Burdigalian	- - - - -	-
					Aquitanian	- - - - -	23-25.2
		Paleogene	Oligocene	- -	Chattian	- - - - -	30
				Early	Stampian	- - - - -	36
			Eocene	Late	Priabonian	[Auversion]	37.0
				Mid	Bartonan	[Mokattain]	42.0
					Lutetian	- - - - -	50
				Early	Ypresian	- - - - -	54 - 56.5
			Paleocene	Late	Thanetian	- - - - -	60.5
				Early	Danian	[Montian]	65 - 66.5
Mesozoic	Cretaceous	Upper	- - - - - -	- -	Maastrichtian	- - - - -	73
					Campanian	- - - - -	83
					Santonian	- - - - -	87.5
					Coniacian	- - - - -	88.5
					Turonian	- - - - -	91
					Cenomanian	- - - - -	97.5
		Lower	- - - - - -	- -	Albian	- - - - -	113
					Aptian	- - - - -	119
					Barremian	- - - - -	125
					Hauterivian	- - - - -	131
					Valanginian	- - - - -	138
					Berriasian	- - - - -	144
	Jurrasic	Upper	- - - - -	- -	Tithonian	- - - - -	150
					Kimmeridgian	- - - - -	156
					Oxfordian	- - - - -	163
		Middle	- - - - -	- -	Callovian	- - - - -	169
					Bathonian	- - - - -	175
					Bajocian	- - - - -	181
					Aalenian	- - - - -	188
		Lower	- - - - - -	- -	Toarcian	- - - - -	194
					Pliensbachian	- - - - -	200
					Sinemurian	- - - - -	206
					Hettangian	- - - - -	213
	Triassic	Late	- - - - - -	- -	Rhaetian	- - - - -	219
					Norian	- - - - -	225
					Carnian	- - - - -	231
		Middle	- - - - - -	- -	Landinian	- - - - -	234
					Anisian	- - - - -	242
		Early	- - - - -	- -	Scythian	- - - - -	248
Paleozoic	Permian	Late	- - - - -	- -	Tatarian	- - - - -	-
					Guadalupian	- - - - -	258
		Early	- - - - -	- -	Sakmarian	- - - - -	-
					Asselian	- - - - -	290