PBDB Interval

Deseadan age

28.9 - 20.9 Ma

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

J. J. Flynn and C. C. Swisher, III. 1995. Cenozoic South American Land Mammal Ages: correlation to global geochronology. Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication 54:317-333 view

The top and bottom ages 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.

There are intervals in 10 timescales which overlap this one. show

This interval is used in the definition of 90 collections

A total of 3370 collections with 26673 occurrences lie within this time span

Show more time

Show linear time

International Chronostratigraphic Timescale			South American Land Mammal Ages		Cenozoic Subepochs
Quaternary	Pleistocene	Late Pleistocene	Lujanian		Late Pleistocene	0.0117
		Chibanian	Lujanian		Middle Pleistocene	0.129
		Chibanian	Ensenadan		Middle Pleistocene	0.3 *
		Calabrian	Ensenadan		Early Pleistocene	0.774
		Calabrian	Sanandresian	Uquian †		1.7 *
		Gelasian	Sanandresian			1.8
Neogene	Pliocene	Piacenzian	Vorohuean		Late Pliocene	2.58
		Piacenzian	Chapadmalalan		Late Pliocene	2.9 *
		Zanclean	Chapadmalalan		Early Pliocene	3.6
			Montehermosan			3.7 *
			Huayquerian			4.9 *
	Miocene	Messinian			Late Miocene	5.333
		Tortonian				7.246
			Chasicoan			7.9 *
			Mayoan			9.9 *
			Laventan			10.9 *
		Serravallian	Laventan		Middle Miocene	11.63
		Serravallian	Colloncuran			13.7 *
		Langhian	Colloncuran			13.82
		Langhian	Friasian			15.4 *
		Burdigalian	Friasian		Early Miocene	15.98
			Santacrucian			16.2 *
			Colhuehuapian			17.4 *
		Aquitanian	Colhuehuapian			20.44
		Aquitanian	Deseadan			20.9 *
Paleogene	Oligocene	Chattian			Late Oligocene	23.03
		Rupelian			Early Oligocene	27.82
		Rupelian	Tinguirirican		Early Oligocene	28.9 *
	Eocene	Priabonian	Tinguirirican		Late Eocene	33.9
		Priabonian	Divisaderan		Late Eocene	35.9 *
		Bartonian			Middle Eocene	37.71
		Lutetian				41.2
		Lutetian	Mustersan			41.9 *
		Ypresian	Mustersan		Early Eocene	47.8
		Ypresian	Casamayoran		Early Eocene	47.9 *
	Paleocene	Thanetian	Riochican		Late Paleocene	56
			Itaboraian			56.9 *
			Peligran			58.9 *
		Selandian			Middle Paleocene	59.2
		Danian			Early Paleocene	61.6
		Danian	Tiupampan		Early Paleocene	62.4 *
						66