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2010
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2017
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AGE
1
Axel Heiberg Island
1
Axel_Heiberg_Island
1
Big_Cedar_Ridge
1
Boulder_Hills
1
British Columbia
1
Calculated
1
Canada
1
Canadian Arctic
1
Canadian Arctic Archipelago
1
Carbon
1
Carbon dioxide
1
Cf-1_Carbonaceous_Bed
1
Colorado
1
Cretaceous
1
Dorsey_Creek_Fence_Carbonaceous_Bed
1
Driftwood_Canyon,_British_Columbia
1
Ellesmere Island
1
Epoch
1
Event label
Falkland
1
Fifteenmile_Carbonaceous_Bed
1
Florissant_Fossil_Beds_National_Monument
1
Formation
1
Fosheim_Anticline
1
Grimy_Gulch
1
Honeycombs_Carbonaceous_Bed
1
Hot_Weather_Creek
1
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