Aalenian
General info
| Belongs to |
Middle Jurassic
|
| Type | chronostratigraphy |
| Rank | Stage |
| Scope | global |
| Status | formal standard |
| Author | Karl Mayer-Eymar |
| Year | 1864 |
| Etymon | Aalen, vicinity at the northeastern margin of the Swabian Alb |
| Age top (Ma) | 170.9 |
| Age base (Ma) | 174.7 |
| Age reference | Hesselbo et al., 2020 |
| Date changed | 2022-11-04 |
| Reference | Content | Year1 | Pages | Remarks |
|---|---|---|---|---|
| Gradstein et al., 2004 |
2004
| |||
| Gradstein et al., 2012 |
2012
| 871 | ||
| Hesselbo et al., 2020 |
2020
| 955-1022 |
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