"The existing members of the family are referable to at least two genera, the one Africa and the other Asiatic. The first genus, Anthropopithecus, is typified by the West African chimpanzee, A. troglodytes, and is characterized by the absence of excessive elevation in the skull, by the fore limb not reaching more than halfway down the shin, the presence of thirteen pairs of ribs, the well developed great toe, the absence of a centrale in the carpus, and the black or grey hair." —Encyclopaedia Britannica, 1910

Young Chimpanzee in Tree

"The existing members of the family are referable to at least two genera, the one Africa and the other…