Stratotype Point Base of Rhuddanian
http://resource.geosciml.org/classifier/ics/ischart/BaseSilurianSP
| label | Stratotype Point Base of Rhuddanian | |||||||
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| ratified GSSP |  |
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| boundary level | 1.6m above theBase of the Birkhill Shale Formation | |||||||
| comment | Dobs Linn, Scotland | |||||||
| correlation event | Graptolite FAD Akidograptus ascensus | |||||||
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| status | Ratified 1984 | |||||||
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| has geometry | Location of Stratotype Point Base of Silurian original | |||||||
| represents boundary |
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