RNames - Scheme: Eras (4)
Binning results
| Structured Name | Oldest | Youngest |
|---|---|---|
| 2dε | Paleozoic | Paleozoic |
| 3a | Paleozoic | Paleozoic |
| 3b | Paleozoic | Paleozoic |
| 4a | Paleozoic | Paleozoic |
| 4b | Paleozoic | Paleozoic |
| 4c | Paleozoic | Paleozoic |
| 5a | Paleozoic | Paleozoic |
| 5b | Paleozoic | Paleozoic |
| 5c | Paleozoic | Paleozoic |
| 5d | Paleozoic | Paleozoic |
| 6a | Paleozoic | Paleozoic |
| 6b | Paleozoic | Paleozoic |
| 6c | Paleozoic | Paleozoic |
| A | Paleozoic | Paleozoic |
| Aalenian | Mesozoic | Mesozoic |
| Aalter | Cenozoic | Cenozoic |
| Aaron Slate | Neoproterozoic | Paleozoic |
| Abad | Cenozoic | Cenozoic |
| Abadeh | Paleozoic | Paleozoic |
| Abadia | Paleozoic | Paleozoic |