Stratotype Point Base of Oligocene
http://resource.geosciml.org/classifier/ics/ischart/BaseOligoceneSP
| ratified GSSP |  |
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| boundary level | Base of a 0.5m thick greenishgrey marl bed 19m above Base of section | |||||
| comment | Massignano, near Ancona, Italy | |||||
| correlation event | Foraminifer LAD Hantkenina and ribrohantkenina | |||||
| dc source | Episodes 16/3, p.379 382, 2001 | |||||
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| status | Ratified 1992 | |||||
| type |
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| shape | Location of Stratotype Point Base of Oligocene original | |||||