Toarcian
Belongs to | Lower Jurassic |
Type | chronostratigraphy |
Rank | Stage |
Scope | global |
Status | informal standard |
Author | d’Orbigny |
Year | 1842 |
Etymon | Thouars, village in the Deux-Sèvres region, France |
Age top (Ma) | 174.7 |
Age base (Ma) | 184.2 |
Date changed | 2022-11-04 |
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