Wenlock (Silurian)
Key events in the Silurian
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Key events of the Silurian Period.
Axis scale: millions of years ago.
Axis scale: millions of years ago.
The Wenlock (seldomly also referred to as Wenlockian) is the second series of the Silurian. It is preceded by the Llandovery series and followed by the Ludlow. Radiometric dates constrain the Wenlockian between 433.4 ± 0.8 and 427.4 ± 0.5 million years ago.