Found in articles
Atlas of Africa: Liberia, Springer Berlin Heidelberg, 2006-01-16, doi:10.1007/3-540-29145-8_31 WAXI: West African Exploration Initiative, West Africa Exploration
（页面存档备份，存于互联网档案馆）, PDF format Sereno's speculation from "Science in Africa", Artist's impressions of Rugops, from Project Exploration Rugops in the Dino Directory
Under the Moslems: A Description of Syria and the Holy Land from A.D. 650 to 1500, Committee of the Palestine Exploration Fund, 1890 (Ibn Jubayr: p. 240
约翰·哈钦松
1946) Botanical Exploration of Southern Africa Mary Gunn and LE Codd (Balkema 1981) ISBN 0-86961-129-1 Biographical Memoirs of Fellows of the Royal Society
G.P; and Wilson, J.A. A long-snouted predatory dinosaur from Africa and the evolution of spinosaurids. Science. 1998, 282 (5392): 1298–1302 [2012-07-04]