Notochoerus were among the largest pigs ever, with adults weighing up to 450 kg (990 lb).[2][3] These pigs were likely derived from the genus Nyanzachoerus. Like other tetraconodontine pigs, the males had ornamental growths on their skulls, formed from enamel.
References
^White, Tim D.; Suwa, Gen (2004). "A new species of Notochoerus (Artiodactyla, Suidae) from the Pliocene of Ethiopia". Journal of Vertebrate Paleontology. 24 (2): 474–480. Bibcode:2004JVPal..24..474W. doi:10.1671/2499.