Keywords: PZSL1907Page128.png Okapia johnstoni <small>Sclater</small> Okapia johnstoni <small> P L Sclater 1901 </small> ™ en Ossicones of Rowland Ward female Okapi specimen Top lateral view outline natural size; center lateral view enlarged; C lateral view transverse section Proceedings of the Zoological Society of London http //archive org/details/proceedingsofzoo19071446zool vol 1907 issue 1 http //archive org/stream/proceedingsofzoo19071446zool page/128/mode/1up page 128 1907 H Grönvold PD-old PZSL 1907-1 Okapia johnstoni horns |