IODP SEDIS - Thesaurus -

Luisian
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Neogene
	....Miocene
	.....middle Miocene
	......Luisian
SN	North America. Middle Miocene, above Relizian and below Mohnian. Added to Thesaurus in 1985.