[Silurian] 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 {Geologic Ages Inline|Wenlock} and {Geologic Ages Inline|Ludlow} million years ago. ==Naming and history== The Wenlock i...