Region
California
4
Alaska
2
Almería (Province)
2
Charleston Region
2
Pacific Coast (North America)
2
Santa Maria Basin
2
Santa Maria Basin (Calif.)
2
Sisquoc Formation (Calif.)
2
South Carolina
2
Spain
2
Asia
1
Blanco, Cape
1
Dominican Republic
1
Kansas
1
Oregon
1
Patagonia (Argentina and Chile)
1
Tierra del Fuego (Argentina and Chile)
1