Prehistoric hyenas

extinct subspecies of carnivore

Pachycrocuta is an extinct genus of hyena. The largest and most well-researched species is Pachycrocuta brevirostris, colloquially known as the giant short-faced hyena as it stood about at the shoulder and it is estimated to have averaged in weight, approaching the size of a lioness, making it the largest known undisputed hyena, only exceeded in size by the possible hyena Dinocrocuta. It is often hypothesised to have been a specialised kleptoparasitic scavenger, using its imposing size to force other predators off of carcasses, though some authors have suggested they may have been effective pa

Chasmaporthetes, also known as hunting or running hyena, is an extinct genus of hyenas distributed in Eurasia, North America, and Africa during the Pliocene-Pleistocene epochs, living from 4.9 million to 780,000 years ago, existing for about . The genus probably arose from Eurasian Miocene hyenas such as Thalassictis or Lycyaena, with C. borissiaki being the oldest known representative. The species C. ossifragus was the only hyena to cross the Bering land bridge into the Americas, and ranged over what is now Arizona and Mexico during Blancan and early Irvingtonian Land Mammal ages, between 5.0

Ictitherium (meaning "weasel beast") is an extinct genus belonging to the family Hyaenidae and the subfamily Ictitheriinae erected by Trouessart in 1897. Ictitherium lived throughout Eurasia during the Late Miocene.

left|thumb|A. eximia skull, National Natural History Museum of China Adcrocuta is an extinct genus of large hyena that lived in Africa and Eurasia during the Miocene epoch.

Protictitherium (gr. first striking beast) is an extinct genus of hyena that lived across Europe and Asia during the Middle and Late Miocene, it is often considered to be the first hyena since it contains some of the oldest fossils of the family. They were especially prolific in Turkey, where every species has been registered.

thumb|left|Teeth

Lycyaena is an extinct genus of terrestrial carnivore in the family Hyaenidae. It has been suggested by R. F. Ewer that Lycyaena may be a possible ancestor to today's aardwolf (Proteles cristatus). Lycyaena lived in Eurasia and North Africa during the Late Miocene.