The permanent dental formula for Zygorhiza is , the deciduous dental formula is . The cingula at the base of the tooth crowns on P2–4 are strongly developed but do not meet on the medial side. P2, the largest upper tooth, has four accessory denticles on the anterior and posterior cutting edges. P3–M2 form a closed series. P2–M2 have two widely separated roots, accessory denticles on the anterior and posterior cutting edges, and anastomosing striae on the enamel.
