What is "hyaenodonta"

Hyaenodonta (sometimes referred as "Hyaenodontida") is an extinct order of hypercarnivorous eutherian mammals. Originally they were classified along with the oxyaenids as part of Creodonta, but that taxon has since been established to be a polyphyletic group, and hyaenodonts are not related to oxyaenids. Hyaenodonts may have evolved as an originally endemic African group in the Paleocene.