The taxonomy and nomenclature of the Hippopotamidae (Mammalia, Artiodactyla) and a description of two new fossil species.
Hippopotamidae. In: Evolution of African mammals (eds.
Les Hippopotamidae (Mammalia, Artiodactyla) du Plio-Pleistocene de l'Ethiopie.
Repartition paleoecologique et relations phylogenetiques des Hippopotamidae (Mammalia, Artiodactyla) du neogene d'Afrique Orientale.
Family Hippopotamidae. In: The fossil Ungulates: Geology, fossil artiodactyls (ed.
The fossil Hippopotamidae of Asia, with notes on the recent species.