qeshta (Boisserie et al. 2017) Archaeopotamus is an extinct genus of Hippopotamidae that lived between 7.5 and 2.58 million years ago in Africa and the Middle East.

Kenyapotamus, however, is only known from partial fossils; Archaeopotamus is the oldest well-identified hippo.

A. lothagamensis is a species whose fossils were discovered at Lothagam, a site southwest of Lake Turkana in Kenya and first described in 2000.

[3] Although the proportions of A. harvardi and A. lothagamensis are similar, the former species is significantly smaller.

Another group of fossils, originally described as Hexaprotodon sahabiensis or the Abu Dhabi Hippopotamus, are now considered to belong to A. harvardi or A. lothagamensis.

Fossils similar to Archaeopotamus have been dated to as recently as about 2 million years ago, the end of the Pliocene epoch.