Darriwilian
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The Darriwilian faunal stage includes most of the Late Llanwirn.
In the geologic timescale, the Darriwilian is the age of the Middle Ordovician epoch of the Ordovician period of the Paleozoic era of the Phanerozoic eon that is comprehended between 468.1 ± 1.6 Ma and 460.9 ± 1.6 Ma (million years ago), approximately. The Darriwilian age succeeds the Stage III age and precedes the Stage V age.
| Ordovician period | ||
|---|---|---|
| Lower/Early Ordovician | Middle Ordovician | Upper/Late Ordovician |
| Tremadocian | Stage 2 | Stage 3 | Darriwilian | Stage 5 | Stage 6 Hirnantian |
