L. de Bonis. "A new species of Adelpharctos (Mammalia, Carnivora, Ursidae) from the late Oligocene of the "Phosphorites du Quercy" (France)". Estudios Geológicos. 67 (2). 2011: 179–186. doi:10.3989/egeol.40553.181.
Louis De Bonis. "Ursidae (Mammalia, Carnivora) from the Late Oligocene of the "Phosphorites du Quercy" (France) and a reappraisal of the genus Cephalogale Geoffroy, 1862". Geodiversitas. 35 (4). 2013: 787–814. doi:10.5252/g2013n4a4.