Open source, please cite original author. This picture is taken from the book by J. Vivien and published in 1991. This is one of a the few pictures of a live Diceros bicornis longipes. Picture contributed by David Brugière
Depierre, D.; Vivien, J. 1991. Mammiferes sauvages du Cameroun. Fontainebleau, L’Office National des Forets. pp. 1-249.
