An ape of the genus cercocebus fuliginosus kneeling on the ground defecating. Coloured etching by W. H. Lizars.

Licence: Public Domain Mark

Credit: An ape of the genus cercocebus fuliginosus kneeling on the ground defecating. Coloured etching by W. H. Lizars. Wellcome Collection. Source: Wellcome Collection.