Hyaenodon Gigas
Hyaenodon ("hyena-tooth") is an extinct genus of carnivorous placental mammals from extinct tribe Hyaenodontini within extinct subfamily Hyaenodontinae (in extinct family Hyaenodontidae),[19] that lived in Eurasia and North America from the middle Eocene, throughout the Oligocene, to the early Miocene. Hyaenodon Gigas is apart of the Neohyaenodon, which is a paraphyletic subgenus of Hyaenodon.