One of the discussions involved the SBZ17-18 subdivision:
1) delineating the boundary between SBZ17-18
2) subdivision of SBZ18
3) is the extinction of large Nummulites diachronous? And how would this affect the SBZ17-18 boundary?
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
