| Period | Age | Time (my) |
|---|---|---|
| Tertiary |
||
| Danian | (65- ) | |
| Late Cretaceous |
||
| Maastrichtian | (65-73) | |
| Campanian | (73-83) | |
| Santonian | (83-87.5) | |
| Coniacian | (87.5-88.5) | |
| Turonian | (88.5-91) | |
| Cenomanian | (91-97.5) | |
| Mid-Cretaceous |
||
| Albian | (97.5-113) | |
| Aptian | (113-119) | |
| Early Cretaceous |
||
| Barremian | (119-125) | |
| Hauterivian | (125-131) | |
| Valanginian | (131-138) | |
| Berriasian | (138-144) |
| Intro | Early Cretaceous | Mid-Cretaceous | Late Cretaceous |
| Palaeontological Evidence | Sedimentological Evidence | Isotope Evidence |
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