| Answer | Crossword Clue |
|---|---|
| eocene | the Eocene Epoch or Series |
| oligocene | Of, relating to, or denoting the third epoch of the Tertiary period, between the Eocene and Miocene epochs |
| paleocene | Of, relating to, or denoting the earliest epoch of the Tertiary period, between the Cretaceous period and the Eocene epoch |
| pliocene | the Pliocene Epoch or Series |
| miocene | the Miocene Epoch or Series |
| miocene | of, relating to, or being an epoch of the Tertiary between the Pliocene and the Oligocene or the corresponding series of rocks see geologic time table |
