PBDB Interval

Early Oligocene subepoch

33.9 - 27.82 Ma

The definition of this interval in the timescale Cenozoic Subepochs is taken from the following source:

W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view

There are intervals in 7 timescales which overlap this one. show

This interval is used in the definition of 771 collections

A total of 2804 collections with 23105 occurrences lie within this time span

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International Chronostratigraphic Timescale			Cenozoic Subepochs	North American Mammal Subages/Zones
Quaternary	Holocene	Meghalayan					0
		Northgrippian					0.0042
		Greenlandian					0.0082
	Pleistocene	Late Pleistocene	Late Pleistocene	Sheridanian			0.0117
		Chibanian	Middle Pleistocene	Sheridanian			0.129
		Chibanian	Middle Pleistocene	Cudahyan/Sappan			0.21
		Calabrian	Early Pleistocene	Cudahyan/Sappan			0.774
		Calabrian		Senecan/Rexroadian			1.4
		Gelasian					1.8
Neogene	Pliocene	Piacenzian	Late Pliocene				2.58
		Zanclean	Early Pliocene				3.6
		Zanclean	Early Pliocene	Late Hemphillian/late Early Hemphillian/early Early Hemphillian			4.7
	Miocene	Messinian	Late Miocene				5.333
		Tortonian					7.246
		Tortonian		Late Clarendonian/Early Clarendonian			9.4
		Serravallian	Middle Miocene	Late Clarendonian/Early Clarendonian			11.63
		Serravallian		late Late Barstovian/early Late Barstovian/Early Barstovian			12.5
		Langhian					13.82
		Burdigalian	Early Miocene				15.98
				Late Hemingfordian/Early Hemingfordian			16.3
				late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean	Harrisonian		18.5
		Aquitanian					20.44
Paleogene	Oligocene	Chattian	Late Oligocene				23.03
					Monroecreekian		23.1 *
					Geringian		24.7 *
		Rupelian	Early Oligocene		Geringian		27.82
		Rupelian	Early Oligocene				29.5
	Eocene	Priabonian	Late Eocene	Late Chadronian/Middle Chadronian/Early Chadronian			33.9
		Priabonian	Late Eocene				37
		Bartonian	Middle Eocene				37.71
		Bartonian		Late Uintan/Early Uintan			39.7
		Lutetian		Late Uintan/Early Uintan			41.2
		Lutetian		Twinbuttean/Blacksforkian/Gardnerbuttian			46.2
		Ypresian	Early Eocene	Twinbuttean/Blacksforkian/Gardnerbuttian			47.8
				Lostcabinian/Lysitean/Graybullian/Sandcouleean			50.5
						Cf3/Cf2/Cf1	54.9
	Paleocene	Thanetian	Late Paleocene			Cf3/Cf2/Cf1	56
		Thanetian	Late Paleocene			Ti6/Ti5/Ti4/Ti3/Ti2/Ti1	56.2
		Selandian	Middle Paleocene			Ti6/Ti5/Ti4/Ti3/Ti2/Ti1	59.2
		Selandian	Middle Paleocene			To3/To2/To1	60.9
		Danian	Early Paleocene			To3/To2/To1	61.6
		Danian	Early Paleocene			Pu3/Pu2/Pu1	63.8
							66