Stratigraphic time
| This age is part of | |
|---|---|
| Phanerozoic | 541 - recent |
| Mesozoic | 251.902 - 66 |
| Jurassic | 201.3 - 145 |
| This age is subdivided to | |
|---|---|
| Toarcian | 182.7 - 174.1 |
| Pliensbachian | 190.8 - 182.7 |
| Sinemurian | 199.3 - 190.8 |
| Hettangian | 201.3 - 199.3 |
| Number of records | |
|---|---|
| Taxa | 419 |