Hyaenodon

Despite appearances, Hyaenodon is not related to wolves or hyenas. It is a creodont, and its closest living relative is the pangolin! Hyaenodon is known from many species throughout the northern hemisphere and Africa, ranging from ferret-sized to the size of a large bear. H. horridus, from North America is about the size of a large wolf.

Superficially doglike, Hyaenodon is quite chunky and robust. It has a short neck and a long, narrow skull. Its jaws are built for bone-crushing. Interestingly, as a Hyaenodon ages, its molars rotate inwards, keeping the teeth sharp. Its senses are well-developed, befitting an arch predator.

Hyaenodon can be found in the Cenozoic North America exhibit.

Scientific name
Hyaenodon horridus

Location
Brule Formation
Kansas and Wyoming, United States
Chadron Formation
Kansas and Wyoming, United States
Chambers Tuff Formation
Texas, United States
Cypress Hills Formation
Alberta, Canada
Palm Peak Formation
New Mexico, United States
White River Formation
Colorado, United States

Time
38-33.3 Ma; Eocene-Oligocene (Bartonian-Rupelian)

Length
1.8 meters (6 feet)

Diet
Herbivorous mammals