PBDB Interval

early Early Arikareean subage

29.5 - 18.5 Ma

The definition of this interval in the timescale North American Mammal Subages/Zones is taken from the following source:

M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view

There are intervals in 11 timescales which overlap this one. show

This interval is used in the definition of 7 collections

A total of 5268 collections with 42019 occurrences lie within this time span

Show more time

Show linear time

International Chronostratigraphic Timescale			North American Mammal Subages/Zones			South American Land Mammal Ages
Quaternary	Pleistocene	Late Pleistocene	Sheridanian			Lujanian		0.0117
		Chibanian	Sheridanian					0.129
			Cudahyan/Sappan					0.21
						Ensenadan		0.3 *
		Calabrian						0.774
			Senecan/Rexroadian					1.4
						Sanandresian	Uquian †	1.7 *
		Gelasian				Sanandresian		1.8
Neogene	Pliocene	Piacenzian				Vorohuean		2.58
		Piacenzian				Chapadmalalan		2.9 *
		Zanclean				Chapadmalalan		3.6
						Montehermosan		3.7 *
			Late Hemphillian/late Early Hemphillian/early Early Hemphillian			Montehermosan		4.7
						Huayquerian		4.9 *
	Miocene	Messinian						5.333
		Tortonian						7.246
						Chasicoan		7.9 *
			Late Clarendonian/Early Clarendonian			Chasicoan		9.4
						Mayoan		9.9 *
						Laventan		10.9 *
		Serravallian						11.63
			late Late Barstovian/early Late Barstovian/Early Barstovian					12.5
						Colloncuran		13.7 *
		Langhian				Colloncuran		13.82
		Langhian				Friasian		15.4 *
		Burdigalian				Friasian		15.98
						Santacrucian		16.2 *
			Late Hemingfordian/Early Hemingfordian			Santacrucian		16.3
			Late Hemingfordian/Early Hemingfordian			Colhuehuapian		17.4 *
			late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean	Harrisonian				18.5
		Aquitanian						20.44
		Aquitanian				Deseadan		20.9 *
Paleogene	Oligocene	Chattian						23.03
				Monroecreekian				23.1 *
				Geringian				24.7 *
		Rupelian						27.82
						Tinguirirican		28.9 *
								29.5
	Eocene	Priabonian	Late Chadronian/Middle Chadronian/Early Chadronian					33.9
			Late Chadronian/Middle Chadronian/Early Chadronian			Divisaderan		35.9 *
								37
		Bartonian						37.71
		Bartonian	Late Uintan/Early Uintan					39.7
		Lutetian						41.2
						Mustersan		41.9 *
			Twinbuttean/Blacksforkian/Gardnerbuttian					46.2
		Ypresian						47.8
						Casamayoran		47.9 *
			Lostcabinian/Lysitean/Graybullian/Sandcouleean					50.5
					Cf3/Cf2/Cf1			54.9
	Paleocene	Thanetian			Cf3/Cf2/Cf1	Riochican		56
					Ti6/Ti5/Ti4/Ti3/Ti2/Ti1	Riochican		56.2
						Itaboraian		56.9 *
						Peligran		58.9 *
		Selandian						59.2
		Selandian			To3/To2/To1			60.9
		Danian						61.6
						Tiupampan		62.4 *
					Pu3/Pu2/Pu1	Tiupampan		63.8
								66