more complicated but sensible checking for duplicates, which now must involve reIDs and/or original IDs that have no reIDs
more complicated but sensible checking for duplicates, which now must involve reIDs and/or original IDs that have no reIDs

paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new