Stratigraphy
Triassic
| Belongs to | Mesozoic |
| Type | chronostratigraphy |
| Rank | System |
| Scope | global |
| Status | formal standard |
| Author | Friedrich August von Alberti |
| Year | 1834 |
| Etymon | Three distinct rock layers (tri meaning "three") that are found throughout Southern Germany |
| Age top (Ma) | 201.4 |
| Age base (Ma) | 251.902 |
| Index | T |
| Date changed | 2022-11-04 |
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