| 100% | OLIGOCENE | 9 | Third epoch of the Palaeogene period of geological time |
| 70% | PLEISTOCENE | 11 | First epoch of the Quaternary period in geological time |
| 57% | EOCENE | 6 | Second epoch of the Palaeogene period in the geologic timescale |
| 56% | MIOCENE | 7 | First geological epoch of the Neogene period |
| 53% | HOLOCENE | 8 | The current epoch of geological time |
| 52% | TRIASSIC | 8 | Geological time period of the first dinosaurs |
| 49% | ERA | 3 | Period of geological time |
| 49% | EPOCH | 5 | Period of geological time |
| 49% | PERMIAN | 7 | Last period of the Palaeozoic era in the geological time scale |
| 49% | EOCENE | 6 | Epoch of the Tertiary period |
| 47% | ETE | 3 | Time period that the third film of Eric Rohmer's "Contes des quatre saisons" takes place (1996) |
| 47% | PLIOCENE | 8 | Last epoch of the Tertiary period |
| 47% | MIOCENE | 7 | First epoch of the Neogene Period |
| 45% | HOLOCENE | 8 | In geology, the second epoch of the Quaternary period |
| 44% | EON | 3 | Geological period of time |
| 44% | ETHOS | 5 | The central beliefs of a time period or community |
| 44% | CONTEMPORANEOUS | 15 | Occurring in the same period of time |
| 43% | FUTURE | 6 | Period of time after the present |
| 43% | DEVONIAN | 8 | Fourth period of the Palaeozoic era of geologic time |
| 43% | ORDOVICIAN | 10 | Second period of the Palaeozoic era of geologic time |
| 42% | HOLOCENE | 8 | Current epoch of geological time |
| 42% | ERA | 3 | Stone or bronze age in terms of the time period |
| 42% | EPOCHS | 6 | Long periods of time; units of geological time |
| 42% | MORNING | 7 | The period of time between midnight and noon |
| 42% | PHASE | 5 | Period of time such as the "terrible twos" |
| 41% | EON | 3 | Period of time from the Greek word for "life" |
| 41% | EVENING | 7 | The period of time at the end of the day |
| 41% | EONS | 4 | The Earth has existed for four of these time periods |
| 41% | HOUR | 4 | Golden ___, period of time before the day ends |
| 40% | PERMIAN | 7 | Last period of the Palaeozoic era in the geological timescale |