Subject Region
North America
55
United States
43
New York (State)
25
California
24
Australia
14
Texas
12
China
11
Alaska
10
Antarctica
10
Great Britain
10
West (U.S.)
10
British Columbia
9
Colorado
9
Maryland
9
Oregon
9
Utah
9
Europe
8
Germany
8
Africa
7
Alberta
7
Great Basin
7
Mexico
7
Pennsylvania
7
Arkansas
6
England
6
Montana
6
Ontario
6
Russia (Federation)
6
Spain
6
Tanzania
6
Wyoming
6
America
5
Canada
5
New Mexico
5
Oklahoma
5
Pacific Coast
5
Arizona
4
Bering Land Bridge
4
Ohio
4
Québec (Province)
4
Argentina
3
Asia
3
Big Bone
3
Big Bone (Ky.)
3
Brazil
3
Burgess Shale (B.C.)
3
California, Southern
3
Canal Zone
3
Earth (Planet)
3
Ethiopia
3
more ...