†Monotherium Van Beneden 1876 (seal)
Mammalia - Carnivora - Phocidae
Alternative spelling: Monatherium
Full reference: P. J. Van Beneden. 1876. Les phoques fossiles du bassin d'Anvers. Bulletins de l'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique 41:783-803
Parent taxon: Monachinae according to A. Berta 2009
Sister taxa: Callophoca, Hydrurga, Leptonychotes, Lobodon, Lobodontini, Mirounga, Miroungini, Monachini, Monachus, Ommatophoca, Pliophoca, Pontophoca, Pristiphoca
Subtaxa: Monotherium aberratum, Monotherium affine, Monotherium delognii, Monotherium gaudini, Monotherium maeotica, Monotherium rousseaui, Monotherium wymani
Type: Monotherium delognii
Ecology: amphibious piscivore-carnivore