Geologic Time Scale Mnemonic for Periods:
(Read from bottom to top.)
| Quaternary | Quail |
| Tertiary | Turkey |
| Cretaceous | Chunks |
| Jurassic | Juicy |
| Triassic | Tender |
| Permian | Puke |
| Pennsylvanian | Peter |
| Mississippian | Make |
| Devonian | Does |
| Silurian | Soup |
| Ordovician | Ordinary |
| Cambrian | Campbell's |
| Proterozoic | |
| Archean |
Geologic Time Scale Mnemonic for Epochs:
(Read from bottom to top.)
| Holocene/Recent | Honey/Rebecca |
| Pleistocene | Please |
| Pliocene | Plate |
| Miocene | My |
| Oligocene | On |
| Eocene | Eggs |
| Paleocene | Put |