PBDB Timescale

Ten Million Year Bins

The interval definitions in this timescale are derived from the following sources:

J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 view

There are 56 timescales which overlap this one. show

Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

This timescale is used in the definition of 1 collections

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International Chronostratigraphic Timescale			Ten Million Year Bins	Paleogene Mammal Ages of Asia		Permo-Triassic Subages of Eastern Europe	Cambrian of West Avalonia	Carboniferous Subepochs	Cretaceous North American Land-Mammal Ages
Quaternary	Holocene	Meghalayan	Cenozoic 6							0
		Northgrippian								0.0042
		Greenlandian								0.0082
	Pleistocene	Late Pleistocene								0.0117
		Chibanian								0.129
		Calabrian								0.774
		Gelasian								1.8
Neogene	Pliocene	Piacenzian								2.58
	Pliocene	Zanclean								3.6
	Miocene	Messinian								5.333
		Tortonian								7.246
		Serravallian	Cenozoic 5							11.63
		Langhian								13.82
		Burdigalian								15.98
		Aquitanian								20.44
Paleogene	Oligocene	Chattian	Cenozoic 4	Tabenbulakian	Hsandagolian					23.03
	Oligocene	Rupelian	Cenozoic 4	Kekeamuan	Hsandagolian					27.82
	Eocene	Priabonian	Cenozoic 3	Houldjinian/Ergilian/Ulangochuian						33.9
		Bartonian	Cenozoic 3	Sharamurunian/Irdinmanhan/Arshantan						37.71
		Lutetian	Cenozoic 2							41.2
		Ypresian	Cenozoic 2		Bumbanian					47.8
	Paleocene	Thanetian	Cenozoic 1	Gashatan						56
		Selandian								59.2
		Danian								61.6
Cretaceous	Late Cretaceous	Maastrichtian	Cretaceous 8						Lancian/Edmontonian	66
		Campanian	Cretaceous 7						Judithian/Aquilan	72.1
		Santonian	Cretaceous 6							83.6
		Coniacian								86.3
		Turonian								89.8
		Cenomanian	Cretaceous 5							93.9
	Early Cretaceous	Albian	Cretaceous 4							100.5
		Aptian	Cretaceous 3							113
		Barremian	Cretaceous 2							121.4
		Hauterivian	Cretaceous 2							125.77
		Valanginian	Cretaceous 1							132.6
		Berriasian	Cretaceous 1							139.8
Jurassic	Late Jurassic	Tithonian	Jurassic 6							145
		Kimmeridgian	Jurassic 5							149.2
		Oxfordian								154.8
	Middle Jurassic	Callovian								161.5
		Bathonian	Jurassic 4							165.3
		Bajocian	Jurassic 4							168.2
		Aalenian	Jurassic 3							170.9
	Early Jurassic	Toarcian	Jurassic 3							174.7
		Pliensbachian	Jurassic 2							184.2
		Sinemurian	Jurassic 1							192.9
		Hettangian	Jurassic 1							199.5
Triassic	Late Triassic	Rhaetian	Triassic 4							201.4
		Norian	Triassic 4							208.5
		Carnian	Triassic 3							227
	Middle Triassic	Ladinian	Triassic 2							237
	Middle Triassic	Anisian	Triassic 2							242
	Early Triassic	Olenekian	Triassic 1			Vokhmian				247.2
	Early Triassic	Induan	Triassic 1			Vokhmian				251.2
Permian	Lopingian	Changhsingian	Permian 4							251.902
	Lopingian	Wuchiapingian				Late Vyatkian/Early Vyatkian				254.14
	Guadalupian	Capitanian				Late Severodvinian/Early Severodvinian				259.51
		Wordian				Late Urzhumian/Early Urzhumian				264.28
		Roadian	Permian 3			Late Kazanian/Early Kazanian				266.9
	Cisuralian	Kungurian	Permian 2							273.01
		Artinskian								283.5
		Sakmarian								290.1
		Asselian	Permian 1							293.52
Carboniferous	Pennsylvanian	Gzhelian	Carboniferous 5					Late Pennsylvanian		298.9
		Kasimovian	Carboniferous 5				303.7	Late Pennsylvanian
		Moscovian	Carboniferous 4				Middle Pennsylvanian	307
		Bashkirian	Carboniferous 4				Early Pennsylvanian	315.2
	Mississippian	Serpukhovian	Carboniferous 3				Late Mississippian	323.2
		Visean	Carboniferous 2				Middle Mississippian	330.9
		Tournaisian	Carboniferous 1				Early Mississippian	346.7
Devonian	Late Devonian	Famennian	Devonian 5					358.9
	Late Devonian	Frasnian	Devonian 4					372.2
	Middle Devonian	Givetian	Devonian 3					382.7
	Middle Devonian	Eifelian	Devonian 3					387.7
	Early Devonian	Emsian	Devonian 2					393.3
		Pragian	Devonian 1					407.6
		Lochkovian	Devonian 1					410.8
Silurian	Pridoli		Silurian 2					419.2
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						427.4
	Wenlock	Sheinwoodian						430.5
	Llandovery	Telychian	Silurian 1					433.4
		Aeronian						438.5
		Rhuddanian						440.8
Ordovician	Late Ordovician	Hirnantian	Ordovician 5		443.8
		Katian	Ordovician 5	445.2
		Sandbian	Ordovician 4	453
	Middle Ordovician	Darriwilian	Ordovician 3	458.4
	Middle Ordovician	Dapingian	Ordovician 2	467.3
	Early Ordovician	Floian	Ordovician 2	470
	Early Ordovician	Tremadocian	Ordovician 1	Ungurian	477.7
Cambrian	Furongian	Stage 10	Cambrian 5	Batyrbaian	485.4
		Jiangshanian		Batyrbaian	489.5
				Aksaian	490.7 *
				Sakian	492.2 *
		Paibian		Sakian	494
	Miaolingian	Guzhangian	Cambrian 4	Ayusokkanian	497
				Ayusokkanian	Arcadian			498.4
								499.5
		Drumian		Zhanaarykian				500.5
		Drumian		Tuesaian				503
		Wuliuan	Cambrian 3	Tuesaian				504.5
		Wuliuan						505.3
	Series 2	Stage 4			Branchian			509
				Toyonian				510 *
				Botomian				512.5 *
		Stage 3	Cambrian 2	Botomian				514
				Atdabanian				515.6 *
				Atdabanian	Placentian			517.1
	Terreneuvian	Stage 2		Tommotian				521
		Stage 2						525.5
		Fortunian	Cambrian 1					529
										538.8