{"id":"S2001010791","label":"Campanian-Maastrichtian boundary","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2001010791","normalized_label":"campanian-maastrichtian boundary","broader":["http://id.loc.gov/authorities/subjects/sh85054092"],"aliases":["Boundary, Campanian-Maastrichtian","Campanian-Maastrichtian stage boundary"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2001010791","provider":"lcsh","revision":"32005a395f79b5d0","taxonomy_revision":"f050b5d4780b1289","title":"Campanian-Maastrichtian boundary","url":"/topics/S2001010791","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9226903677363692038","address_version":"morton4x16-v1","coordinates":[0,477,5121,39936],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}