| Name |
Explanation |
| eon (aeon) |
longest period of geologic time - made up of more than one (1) era |
| era | geologic time which is made up of one (1) or usually more periods |
| period | geologic time longer than epoch and shorter than era |
| epoch | a unit of geologic time which is a division of a period |
| Istillah | Penerangan |
| aeon | jangka masa terpanjang dalam zaman geologi |
| era | jangka masa geologi di antara "aeon" dan "tempoh" |
| tempoh | jangka masa geologi di antara "era" dan "epok" |
| epok | jangka masa geologi yang merupakan sebahagian daripada "tempoh" |
