My life reconstruction of Masrasector nananubis, an Egyptian, Late Eocene (Priabonian, ~34 Ma) teratodontine hyaenodont of the size of a mongoose (roughly 1 kg). As described by (Borths & Seiffert 2017), based on the morphology of the distal humerus, it was an agile, terrestrial predator.

References:

• Borths MR, Seiffert ER (2017) Craniodental and humeral morphology of a new species of Masrasector (Teratodontinae, Hyaenodonta, Placentalia) from the late Eocene of Egypt and locomotor diversity in hyaenodonts. PLoS ONE 12(4): e0173527. doi:10.1371/journal.pone.0173527