title: Pygmy chimpanzee as a possible prototype for the common ancestor of humans, chimpanzees and gorillas.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002508:Cephalometry; D005580:Fossils; D006071:Gorilla gorilla / Q000033:anatomy & histology / Q000235:genetics; D006801:Humans; D002679:Pan troglodytes / Q000033:anatomy & histology* / Q000235:genetics