This tooth is of an extinct pig is a lower worn third molar that belonged to Metridiochoerus andrewisi. The teeth of these pigs are made up of many pillars and are quite high crowned. This is an adaptation to a grass dominated diet. This tooth was found in 2005 in Area 104 on the east side of Lake Turkana.
Metridiochoerus andrewsi is a sexually dimorphic pig with large males and smaller females. The skulls of adult males of this species display well developed zygomatic knobs, the protuberances near the eye sockets. These are absent in the females.