http://resource.geosciml.org/classifier/ics/ischart/BaseMiddlePennsylvanianSP
| comment | candidates are in southern Urals or Nashui (south China). | |||||
|---|---|---|---|---|---|---|
| correlation event | Either conodont FAD Idiognathoides postsulcatus or Declinognathodus donetzianus. | |||||
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| see also | index.html original | |||||