Related Clues:
- Certain geologic epoch
- Epoch of mammals' appearance
- Tertiary Period epoch
- Of a Tertiary epoch
- One of the epochs
- Epoch in which mammals arose
- Epoch when bats first appeared
- In old age the one gets broken in ease, by the sound of it
- Sounds as if Olly will go, in view of age
- Seen at last to sound an age
- Certain geological epoch
- Cool genie, suffering from old age
- Epoch when mammals began
- Epoch with lots of fish
- With 50-Down, when modern mammals emerged