Stratigraphic time
| This age is part of | |
|---|---|
| Phanerozoic | 541 - recent |
| Paleozoic | 541 - 251.902 |
| Silurian | 443.8 - 419.2 |
| This age is subdivided to | |
|---|---|
| Telychian | 438.5 - 433.4 |
| Aeronian | 440.8 - 438.5 |
| Rhuddanian | 443.8 - 440.8 |
| Number of records | |
|---|---|
| Taxa | 524 |
| This age is part of | |
|---|---|
| Phanerozoic | 541 - recent |
| Paleozoic | 541 - 251.902 |
| Silurian | 443.8 - 419.2 |
| This age is subdivided to | |
|---|---|
| Telychian | 438.5 - 433.4 |
| Aeronian | 440.8 - 438.5 |
| Rhuddanian | 443.8 - 440.8 |
| Number of records | |
|---|---|
| Taxa | 524 |