Geography
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Maryland
18 results
North Carolina
18 results
Pennsylvania
18 results
Missouri
17 results
Pakistan
17 results
Argentina
16 results
Louisiana
16 results
South Carolina
16 results
United States, West
16 results
Spain
15 results
Marshall Islands
14 results
New Jersey
14 results
Virginia
14 results
Canal Zone
13 results
Colombia
13 results
Green River Formation
13 results
Gulf States
13 results
Pacific Ocean
13 results
Panama
13 results
Peru
13 results
South Africa
13 results
Tanzania
13 results
Western Australia
13 results
Kenya
12 results
Maine
12 results
Middle West
12 results
Russia (Federation)
12 results
Arctic regions
11 results
Georgia
11 results
Indonesia
11 results
Iowa
11 results
Lucas County
11 results
Sweden
11 results
Tennessee
11 results
'Eua Island
10 results
Earth (Planet)
10 results
Germany (West)
10 results
India
10 results
Meade County
10 results
Minnesota
10 results
Paris
10 results
Patagonia (Argentina and Chile)
10 results
Québec (Province)
10 results
Tonga
10 results
Wales
10 results
Wasatch Formation
10 results
Alberta
9 results
Alps
9 results
Brazil
8 results
California, Southern
8 results
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