PBDB Interval

39.7 - 37 Ma

The definition of this interval in the timescale North American Land Mammal Ages is taken from the following source:

A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 view

There are intervals in 6 timescales which overlap this one. show

This interval is used in the definition of 108 collections

A total of 1664 collections with 20527 occurrences lie within this time span

International Chronostratigraphic Timescale			North American Land Mammal Ages	South American Land Mammal Ages
					18.5
					20.9
Paleogene	Oligocene	Chattian	Arikareean	Deseadan	23.03 *
		Rupelian		Deseadan	27.82
				Tinguirirican	28.9 *
			Whitneyan		29.5
			Orellan		31.8
	Eocene	Priabonian	Chadronian		33.9
			Chadronian	Divisaderan	35.9 *
			Duchesnean		37
		Bartonian	Duchesnean		37.71
		Bartonian	Uintan		39.7
		Lutetian			41.2
				Mustersan	41.9 *
			Bridgerian		46.2
		Ypresian			47.8
				Casamayoran	47.9 *
			Wasatchian		50.5
			Clarkforkian		54.9
	Paleocene	Thanetian	Clarkforkian	Riochican	56
			Tiffanian	Riochican	56.2
				Itaboraian	56.9 *
				Peligran	58.9 *
		Selandian			59.2
		Selandian	Torrejonian		60.9
		Danian			61.6
				Tiupampan	62.4 *
			Puercan	Tiupampan	63.8
					66