Stratigraphic time
| This age is part of | |
|---|---|
| Phanerozoic | 541 - recent |
| Paleozoic | 541 - 251.902 |
| Silurian | 443.8 - 419.2 |
| This age is subdivided to | |
|---|---|
| Ludfordian | 425.6 - 423 |
| Gorstian | 427.4 - 425.6 |
| Number of records | |
|---|---|
| Taxa | 772 |
| This age is part of | |
|---|---|
| Phanerozoic | 541 - recent |
| Paleozoic | 541 - 251.902 |
| Silurian | 443.8 - 419.2 |
| This age is subdivided to | |
|---|---|
| Ludfordian | 425.6 - 423 |
| Gorstian | 427.4 - 425.6 |
| Number of records | |
|---|---|
| Taxa | 772 |