Region
'Eua Island
5
Africa
5
Africa, North
1
Agate Fossil Beds National Monument
3
Agate Fossil Beds National Monument (Neb.)
3
Alabama
4
Alaska
52
Alaska Peninsula
1
Alaska Peninsula (Alaska)
1
Alaska Range
1
Alberta
11
Almería (Province)
2
Amazon River Region
3
Amchitka Island
1
America
3
Ankara Region
1
Antarctica
8
Antigua and Barbuda
1
Appalachian Mountains
1
Araripe Plateau
2
Arctic Regions
1
Arctic regions
2
Argentina
3
Arizona
5
Arkansas
6
Asia
1
Asia, Central
2
Astoria
1
Athabasca Basin (Sask. and Alta.)
1
Athabasca Tar Sands
1
Athabasca Tar Sands (Alta.)
1
Atlantic Coast
2
Atlantic Coast (North America)
1
Atlantic Coast (U.S.)
2
Atlantic Highlands
1
Atlantic Ocean
1
Australia
9
Bahariya Oasis
1
Baja California (Peninsula)
4
Beaufort Sea Coast
1
Beaufort Sea Region
1
Belgium
2
Bering Land Bridge
1
Bernissart
2
Big Bone
2
Big Bone (Ky.)
2
Bighorn Basin (Mont. and Wyo.)
3
Bighorn River
1
Bighorn River (Wyo. and Mont.)
1
Bikini Atoll
1
more ...