 The crowns are long and slender, and elliptical in cross-section, while the apex forms a blunt, triangular point.The most prominent wear facet is on the apex, though unlike all other wear patterns observed within sauropods, diplodocine wear patterns are on the labial (cheek) side of both the upper and lower teeth.This implies that the feeding mechanism of "Diplodocus" and other diplodocids was radically different from that of other sauropods.