 Dicynodonts were specialized herbivores that employed a unique “cheek pivot system” of mastication that created powerful shearing action upon closure of the jaw and subsequently ground mouth contents through a system of interlocking ridges and grooves formed from the palate and dentary.Two morphological features, present already in "Eodicynodon", made this motion possible.The first was a double convex jaw joint, wherein both the quadrate and articular formed convex condyles.