1) Adult male gorilla 2) Gorilla 3) Gorilla gorilla 4) Gorilla patriarch 5) Mature male gorilla 6) Money and support for big ape 7) Patriarchal gorilla Found on https://www.crosswordclues.com/clue/silverback
(from the article `human evolution`) ...biologists, and psychologists who speculate on the origins of human society. Gorillas appeal to theorists who stress male dominance and ... Found on http://www.britannica.com/eb/a-z/s/96