EARTH SCIENCE
Platte Canyon High
School
Bailey, Colorado
GEOLOGIC TIME SCALE
Cretaceous
after Harland et al., 1982
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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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