I 
II 
III 
IV 
CRETACEOUS 
Alaska (Arctic Coastal Plain) . 
Manitoba, Canada (Cedar Lake) . . . 
Atlantic Coastal Plain 
1. Kreischerville, New York 
2, Martha’s Vineyard, Massachusetts 
3. Harrisonville, New Jersey 
4. Cliffwood, New Jersey . 
5. Bordentown, New Jersey 
6. Roebling, New Jersey . 
7. Kineora, New Jersey 
8. Pemberton, New Jersey . 
9. St. Georges, Delaware 
10. Washington, D.C. 
11. Magothy River, Maryland 
12, Charleston, South Carolina . 
Baja California, Mexico 
EARLY TERTIARY 
Seattle, Washington . 
Dominican Republic . 
Chiapas, Mexico 
Para, Brazil 
UNKNOWN AGE 
Guayaquil, Ecuador 
Girén, Colombia 
Medellin, Colombia 
Cafion Diablo, Arizona . 
Greenland 
Montana . 
Number of spectra for all localities are indicated. 
[ 76 ] 
. 30 
oO NO = 
