This is a mandible fragment preserving only the lower P3-P4. It belongs to Kamoyapithecus hamiltoni, a primate discovered in the Eragaleit Beds at Lothidok, west Turkana. It might be a catarrhine (a group that includes both apes and Old World monkeys) or it might already be a very early hominoid (an ape). This is another example of the earliest evidence of a possible fossil ape in Kenya, and one of only a few large primates known from this period. The name Kamoyapithecus was given to it in recognition of the world renown fossil hunter Kamoya Kimeu.
This specimen was published in 1995.