Stratotype Point Base of Pennsylvanian
http://resource.geosciml.org/classifier/ics/ischart/BasePennsylvanianSP
| ratified GSSP |  |
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| boundary level | 82.9m above the top of the Battleship Formation in the lower Bird Spring Formation | |||||
| comment | Arrow Canyon, Nevada | |||||
| correlation event | Conodont FAD Declinognathodus noduliferus | |||||
| dc source | Episodes 22/4, p. 272 283, 1999 | |||||
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| status | Ratified 1996 | |||||
| type |
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| shape | Location of Stratotype Point Base of Pennsylvanian original | |||||