Question: Which Unit has Authors of Dalla Vecchia, Wild, & Reitner?
SQL: SELECT "Unit" FROM "2-15313494-6" WHERE "Authors" = 'Dalla Vecchia, Wild, & Reitner';

Question: Where is Two Medicine Formation?
SQL: SELECT "Location" FROM "2-15313494-6" WHERE "Unit" = 'Two Medicine Formation';

Question: What is Varricchio's unit?
SQL: SELECT "Unit" FROM "2-15313494-6" WHERE "Authors" = 'Varricchio';

Question: Which authors have a Unit of Densuș-Ciula Formation?
SQL: SELECT "Authors" FROM "2-15313494-6" WHERE "Unit" = 'Densuș-Ciula Formation';

Question: Which Status has a Unit of Daohugou Beds?
SQL: SELECT "Status" FROM "2-15313494-6" WHERE "Unit" = 'Daohugou Beds';

Question: What is Varricchio's status?
SQL: SELECT "Status" FROM "2-15313494-6" WHERE "Authors" = 'Varricchio';