Stratigraphy
Darriwilian
| Belongs to | Middle Ordovician |
| Type | chronostratigraphy |
| Rank | Stage |
| Scope | global |
| Status | formal standard |
| Author | Mitchell, C. E., Xu, C., Bergström, S. M., Zhang, Y., Wang, Z,. Webby, B. D., Finney, S. C. |
| Year | 1997 |
| Etymon | Darriwill, a parish in County of Grant, Australia. |
| Age top (Ma) | 458.4 |
| Age base (Ma) | 467.3 |
| Alt. index | O2dr |
| Date added | 2003-04-02 |
| Date changed | 2022-11-04 |
Locality | Type | From (m) | To (m) | Reference | Remarks | |
|---|---|---|---|---|---|---|
| Huangnitang, Zhejiang | boundary stratotype | Mitchell et al., 1997 |
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