Frasnian
Belongs to | Upper Devonian |
Type | chronostratigraphy |
Rank | Stage |
Scope | global |
Status | formal standard |
Author | Klapper et al., |
Year | 1987 |
Etymon | Frasnes area, Belgium |
Age top (Ma) | 372.2 |
Age base (Ma) | 382.7 |
Index | d6 |
Date added | 2003-04-03 |
Date changed | 2022-11-04 |
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