IODP SEDIS - Thesaurus -

Ludlow Member
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Paleogene
	....Paleocene
	.....Ludlow Member
RT	Montana
	North Dakota
	South Dakota
	Fort Union Formation
SN	In Fort Union Formation. NW and N South Dakota, NE Montana and SW North Dakota. Added to Thesaurus in 1989.

Ludlowville Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Devonian
	....Middle Devonian
	.....Ludlowville Formation
RT	New York
	Hamilton Group
SN	In Hamilton Group. W and central New York. Includes Ledyard Shale Member; Wanakah Member. Added to Thesaurus in 1989.