Region
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Brooks Range
2
Brown County
2
Burgess Shale (B.C.)
2
California, Southern
2
Caribbean Area
2
Cincinnati Region
2
Dakota Formation
2
Dinosaur National Monument (Colo. and Utah)
2
East (U.S.)
2
Egypt
2
Ethiopia
2
Florissant Fossil Beds National Monument
2
Florissant Fossil Beds National Monument (Colo.)
2
Frontier Formation
2
Germany
2
Gondwana (Continent)
2
Grande Prairie (Alta.)
2
Great Lakes Region (North America)
2
Great Plains
2
Green River Formation
2
Greenland
2
Guadalupe Mountains (N.M. and Tex.)
2
Hungary
2
Hydra Island
2
Illinois
2
Indian Ocean
2
Indiana
2
Islands of the Pacific
2
Kenya
2
Lee Creek Mine Region
2
Llano Region
2
Mascarene Islands
2
Middle Awash
2
Middle Awash (Ethiopia)
2
Midway Islands
2
Mississippi
2
Mongolia
2
North Atlantic Ocean
2
Northeastern States
2
Nye County
2
Oceania
2
Olduvai Gorge
2
Olduvai Gorge (Tanzania)
2
Pacific Area
2
Pacific Coast
2
Pacific Coast (U.S.)
2
Pakistan
2
Park County
2
Pennsylvania
2
Prehistoric Trackways National Monument
2
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