[3] Lissodus sensu lato (including Lonchidion) has been estimated to have had a body size range of 15–50 centimetres (0.49–1.64 ft).

[2] Typical dental features of this genus include a single central cusp, base of teeth expanding towards the lingual side and riddled with vascular canals.

[1] The shape of the main cusp and large canal openings are similar to those of the Cassisodus margaritae although latter has cusplets on both sides of the crown.

[1] The low crowned teeth suggest that Lissodus was a bottom dweller that fed by crushing hard shelled organisms (durophagy).

[1] Preserved skull and postcranial remains are known for the Early Triassic species L. cassangensis and L. africanus from Angola and South Africa respectively.