EARTH SCIENCE |
Platte Canyon High
School |
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GEOLOGIC TIME SCALE Cretaceous after Harland et al., 1982 |
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Period | Epoch | Age | Ma age | Comments |
65 | ||||
Cretaceous | Senonian K2 |
Maastrichtian | 73 | |
Campanian | 83 | |||
Santonian | 87.5 | |||
Coniacian | 88.5 | |||
K2 / K1 | Turonian | 91 | ||
Cenomanian | 97.5 | |||
Albian | 113 | |||
Aptian | 119 | |||
Barrenian | 125 | |||
Neocomian K1 |
Hauterivian | 131 | ||
Valanginian | 138 | |||
Berriasian | 144 |
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