Formation

Schuchert Dal Formation Claremont Shale Admiral Formation Clarkia Formation Big Sandy Formation Admire Formation Clays Ferry Formation Billhook Formation Bill's Creek Shale Bingham Mine Formation Clifton Down Limestone Bird Spring Formation Bisbee Group Bisher Formation Lockport Formation Bishop Cap Formation Black Creek Formation Coal Valley Formation Cochise Formation Cockfield Formation Black Prince Limestone Fayette Sandstone Black River Formation Black River Group Black Rock Formation Blaine Formation Coffee Mill Hammock Formation Coils Creek Limestone Alachua Formation Loon River Formation Lorraine Formation Coleman Junction Formation Coleraine Formation Alamitos Formation Colina Formation Ferruginous Sands Collingwood Shale Blossom Sand Snowshoe Formation Blue River Group Bluefield Shale Colton Formation Comanche Formation Combe Martin Slates Aldrich Station Formation Sources Formation Compton Limestone Forest Hollow Beds Mammaliferous Crag Formation Bois d'Arc Formation