Prolimnocyon ("before Limnocyon") is an extinct paraphyletic genus of limnocyonid hyaenodonts that lived in Asia and North America during the late Paleocene to middle Eocene.[6] Prolimnocyon chowi is the earliest known member of the hyaenodontid family Limnocyonidae.[7]
The phylogenetic relationships of genus Prolimnocyon are shown in the following cladogram.[8][9][10][11][12][13][14]