PBDB Interval Range

39.7 - 33.9 Ma

International Chronostratigraphic Timescale			North American Land Mammal Ages
Quaternary	Holocene	Meghalayan	Saintaugustinean	0
		Meghalayan	Santarosean	0.0004
		Northgrippian		0.0042
		Greenlandian		0.0082
	Pleistocene	Late Pleistocene		0.0117
		Late Pleistocene	Rancholabrean	0.014
		Chibanian	Rancholabrean	0.129
		Chibanian	Irvingtonian	0.21
		Calabrian	Irvingtonian	0.774
		Calabrian	Blancan	1.4
		Gelasian		1.8
Neogene	Pliocene	Piacenzian		2.58
		Zanclean		3.6
		Zanclean	Hemphillian	4.7
	Miocene	Messinian		5.333
		Tortonian		7.246
		Tortonian	Clarendonian	9.4
		Serravallian	Clarendonian	11.63
		Serravallian	Barstovian	12.5
		Langhian		13.82
		Burdigalian		15.98
			Hemingfordian	16.3
			Arikareean	18.5
		Aquitanian		20.44
Paleogene	Oligocene	Chattian		23.03
		Rupelian		27.82
			Whitneyan	29.5
			Orellan	31.8
	Eocene	Priabonian	Chadronian	33.9
		Priabonian	Duchesnean	37
		Bartonian	Duchesnean	37.71
		Bartonian	Uintan	39.7
		Lutetian	Uintan	41.2
		Lutetian	Bridgerian	46.2
		Ypresian	Bridgerian	47.8
			Wasatchian	50.5
			Clarkforkian	54.9
	Paleocene	Thanetian	Clarkforkian	56
		Thanetian	Tiffanian	56.2
		Selandian	Tiffanian	59.2
		Selandian	Torrejonian	60.9
		Danian	Torrejonian	61.6
		Danian	Puercan	63.8
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