Stratotype Point Base of Upper Ordovician
http://resource.geosciml.org/classifier/ics/ischart/BaseUpperOrdovicianSP
| label | Stratotype Point Base of Upper Ordovician | |||||||
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| ratified GSSP |  |
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| boundary level | 1.4m below a phosphorite marker bed in the E14b outcrop | |||||||
| comment | Sularp Brook, Fagelsang, Sweden | |||||||
| correlation event | Graptolite FAD Nemagraptus gracilis | |||||||
| see also |
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| source | Episodes 23/2, p. 102 109, 2000 | |||||||
| status | Ratified 2002 | |||||||
| type |
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| has geometry | Location of Stratotype Point Base of Upper Ordovician original | |||||||