What is Authors, when Novelty is Gen Nov, when Location is South Africa, and when Name is Criocephalosaurus?
CREATE TABLE "non_mammalian" (
  "name" text,
  "novelty" text,
  "status" text,
  "authors" text,
  "location" text
);
SELECT "authors" FROM "non_mammalian" WHERE "novelty"='gen nov' AND "location"='south africa' AND "name"='criocephalosaurus';