Divisions
The Jurassic period is divided into Early Jurassic, Middle, and Late Jurassic epochs. The Jurassic System, in stratigraphy, is divided into Lower Jurassic, Middle, and Upper Jurassic series of rock formations, also known as Lias, Dogger and Malm in Europe. The separation of the term Jurassic into three sections goes back to Leopold von Buch (* 1774, † 1853). The faunal stages from youngest to oldest are:
| Upper/Late Jurassic | |
| Tithonian | (152.1 ± 4.0 – 145.5 ± 4.0 Mya) |
| Kimmeridgian | (155.7 ± 4.0 – 150.8 ± 4.0 Mya) |
| Oxfordian | (161.2 ± 4.0 – 155.7 ± 4.0 Mya) |
| Middle Jurassic | |
| Callovian | (164.7 ± 4.0 – 161.2 ± 4.0 Mya) |
| Bathonian | (167.7 ± 3.5 – 164.7 ± 4.0 Mya) |
| Bajocian | (171.6 ± 3.0 – 167.7 ± 3.5 Mya) |
| Aalenian | (175.6 ± 2.0 – 171.6 ± 3.0 Mya) |
| Lower/Early Jurassic | |
| Toarcian | (183.0 ± 1.5 – 175.6 ± 2.0 Mya) |
| Pliensbachian | (189.6 ± 1.5 – 183.0 ± 1.5 Mya) |
| Sinemurian | (196.5 ± 1.0 – 189.6 ± 1.5 Mya) |
| Hettangian | (199.6 ± 0.6 – 196.5 ± 1.0 Mya) |
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