Stratigraphic time
| This age is part of | |
|---|---|
| Phanerozoic | 542 - recent |
| This age is subdivided to | |
|---|---|
| Permian | 299 - 251 |
| Carboniferous | 359.2 - 299 |
| Devonian | 416 - 359.2 |
| Silurian | 443.7 - 416 |
| Ordovician | 488.3 - 443.7 |
| Cambrian | 542 - 488.3 |
| Number of records | |
|---|---|
| Taxa | 365 |
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