Tetralophodon

Tetralophodon (from Ancient Greek τετρα- (tetra-), meaning "four", λόφος (lóphos), meaning "ridge", and ὀδούς (odoús), meaning "tooth") is an extinct genus of "tetralophodont gomphothere" belonging to the superfamily Elephantoidea, known from the Miocene of Afro-Eurasia. It has been posited to be the ultimate ancestor of Elephantidae.