PBDB Interval Range

56 - 33.9 Ma

International Chronostratigraphic Timescale
Paleogene	Oligocene	Chattian	23.03
	Oligocene	Rupelian	27.82
	Eocene	Priabonian	33.9
		Bartonian	37.71
		Lutetian	41.2
		Ypresian	47.8
	Paleocene	Thanetian	56
		Selandian	59.2
		Danian	61.6
			66