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Thesaurus

Lower Cretaceous
BT	Chronostratigraphic Units
	.Phanerozoic
	..Mesozoic
	...Cretaceous
	....Lower Cretaceous
NT	Berriasian
	Valanginian
	Hauterivian
	Barremian
	Aptian
	Albian
	Antlers Sands
	Areado Formation
	Baquero Formation
	Bear River Formation
	Bisbee Group
	Blackleaf Formation
	Blake-Bahama Formation
	Bluesky Formation
	Burro Canyon Formation
	Cadomin Formation
	Cedar Mountain Formation
	Cheyenne Sandstone
	Christopher Formation
	Clearwater Formation
	Cloverly Formation
	Comanche Peak Limestone
	Edwards Formation
	Fall River Formation
	Fredericksburg Group
	Gargasian
	Gault Clay
	Georgetown Formation
	Gething Formation
	Glen Rose Formation
	Hosston Formation
	Inyan Kara Group
	Isachsen Formation
	Kiowa Formation
	Kootenay Formation
	Lakota Formation
	Mannville Group
	McMurray Formation
	Mentor Beds
	Mesa Rica Sandstone
	Moosebar Formation
	Mowry Shale
	Muddy Sandstone
	Mural Limestone
	Neocomian
	Newcastle Sandstone
	Paluxy Formation
	Pasayten Group
	Pearsall Formation
	Pebble Shale
	Purbeckian
	Rodessa Formation
	Skull Creek Shale
	Sligo Formation
	Speeton Clay
	Spirit River Formation
	Sunniland Limestone
	Thamama Group
	Torok Formation
	Travis Peak Formation
	Trinity Group
	Urgonian
	Wealden
	Zubair Formation
RT	Upper Cretaceous
	Comanchean
	Kirkwood Formation
	upper Gondwana System
	Toro Formation
	Middle Cretaceous
	Washita Group
	Nevadan Orogeny
	Nicoya Complex
	J Sandstone
	Gates Formation
	Vraconian