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What are the four series of the Silurian System?
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Silurian Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the middle part of the Silurian Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Silurian System is divided into four rock series, which correspond to four distinct epochs of time:1
- Llandovery Series: Spanning 443.8β433.4 million years ago, this series is further divided into the Rhuddanian, Aeronian, and Telychian stages.1
- Wenlock Series: Spanning 433.4β427.4 million years ago, this series consists of the Sheinwoodian and Homerian stages.1
- Ludlow Series: Spanning 427.4β423 million years ago, this series includes the Gorstian and Ludfordian stages.1
- Pridoli Series: Spanning 423β419.2 million years ago, this is the final series of the Silurian System and has not been divided into stages.1