 |
TIMELINE | Jurassic |
 |
 |
 |
| Period | Subdivision | Timespan |
| Jurassic | Upper or Late Jurassic | 161,200,000 to 145,500,000 year ago |
| Middle Jurassic | 161,200,000 to 175,600,000 years ago | |
| Lower or Early Jurassic | 175,600,000 to 199,600,000 years ago |