Region
Africa
7
Africa, Sub-Saharan
3
Africa, West
2
Alachua County
1
Algeria
1
Amazon River Region
4
Amazon River Valley
1
Amazonas (R⩯) Regi⯮ del
1
Amazonie
1
America
7
American Bottom
1
American Bottom (Ill.)
1
Andalusia
2
Andalusia (Spain)
2
Antigua and Barbuda
1
Arabian Peninsula
1
Argentina
4
Asia
2
Atlantic Ocean Region
1
Atrato River Valley
1
Australia
2
Austria
1
Bahamas
2
Barbados
1
Barro Colorado Island
1
Betty's Hope (Antigua and Barbuda)
1
Bolivia
7
Brazil
12
Bristol
1
Bristol (Pa.)
1
British Virgin Islands
2
Bucks County
1
Bucks County (Pa.)
1
Cahokia
1
Cahokia (Ill.)
1
Cahokia Mounds State Historic Park
2
California
1
Canada
4
Canal Zone
15
Caracas
2
Caribbean Area
10
Caribbean Sea
1
Catawba River Valley (N.C. and S.C.)
2
Central America
5
Charlotte Harbor (Bay)
1
Charlotte Harbor (Fla. : Bay)
1
Chile
5
China
4
Citrus County (Fla.)
3
Colombia
13
more ...