United States 118
Wyoming 113
Colorado 106
Montana 88
Texas 80
Utah 63
Alaska 52
California 44
West (U.S.) 43
Powder River Basin (Wyo. and Mont.) 42
New Mexico 38
Kansas 29
Alberta 28
British Columbia 25
San Juan Basin (N.M. and Colo.) 21
North America 20
Israel 19
Puerto Rico 19
South Dakota 19
Greenland 18
New Jersey 18
Alabama 17
Canada 17
South Carolina 17
Uinta Basin (Utah and Colo.) 17
France 15
Georgia 15
Mesaverde Group 15
North Dakota 15
Piceance Creek Basin 15
Mexico 13
Mississippi 13
Northwest Territories 13
Uinta Basin 13
Arizona 12
Dakota Formation 12
Gulf Coast (U.S.) 12
Southern States 12
Wind River Basin 11
Black Hills (S.D. and Wyo.) 10
Carbon County 10
Frontier Formation 10
Bighorn Basin (Mont. and Wyo.) 9
Canada, Western 9
England 9
Germany 9
Great Plains 9
Pierre Shale 9
Australia 8
Europe 8
Gulf States 8
Oregon 8
United States, West 8
Caribbean Area 7
Front Range (Colo. and Wyo.) 7
Grand County 7
Idaho 7
New York (State) 7
Switzerland 7
Tennessee 7
Wind River Basin (Wyo.) 7
Yukon 7
Antarctica 6
Arkansas 6
Brazil 6
Garfield County 6
Green River Watershed (Wyo.-Utah) 6
Japan 6
Kaiparowits Plateau 6
Lakota Formation 6
Mancos Shale 6
Maryland 6
Middle East 6
New Zealand 6
North Carolina 6
Pacific Coast (U.S.) 6
Atlantic Coast (U.S.) 5
Beaverhead County 5
Black Hills 5
Book Cliffs (Utah and Colo.) 5
Cuba 5
Emery County 5
Fremont County 5
Italy 5
Judith River Formation 5
Lance Formation (Colo. and Wyo.) 5
Mississippi Embayment 5
Nebraska 5
Nunavut 5
Ocean Point 5
Oklahoma 5
Portugal 5
Vancouver Island 5
Virginia 5
America 4
Arctic regions 4
Asia 4
Colorado Plateau 4
Denmark 4
Dinosaur Provincial Park 4