title: The evolutionary relationships of man and orang-utans.
abstract: Man shares uniquely few morphological features with either the chimpanzee or the gorilla, whereas there are many features that suggest affinities between man and the orang-utan, to whom the fossil Sivapithecus appears to be closely related. If these are unique features, inclusion of Sivapithecus, man and the orang-utan in a single clade, distinct from that containing the African apes, is justified but contrary to current opinion.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005580:Fossils; D000882:Haplorhini / Q000033:anatomy & histology*; D006454:Hemoglobins / Q000235:genetics; D015186:Hominidae / Q000033:anatomy & histology*; D006801:Humans; D010163:Paleontology; D002679:Pan troglodytes / Q000033:anatomy & histology; D010802:Phylogeny; D011148:Pongo pygmaeus / Q000033:anatomy & histology*; D012886:Skull / Q000033:anatomy & histology; D013045:Species Specificity
chemical_list: D006454:Hemoglobins