http://resource.geosciml.org/classifier/ics/ischart/BasePennsylvanian
| label | Base of Pennsylvanian | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| alt label |
|
|||||||||||
| type |
|
|||||||||||
| in temporal position | BasePennsylvanianTime original | |||||||||||
| stratotype |
|
|||||||||||