Diegocanis elegans was named by Martinez et al. (2013) [Eucynodont characterized by possessing the following autapomorphies: long palatal process of the premaxilla, extending backwards at the level of the first postcanine tooth; deep and large fossa opening laterodorsally on the maxilla, at the level of the root of the upper canine; and thin postorbital bar diverging posterolaterally at very low angle (35.6°) from the sagittal axis of the skull.]. Its type specimen is PVSJ 881, a partial skull (represented by the snout and the orbital region, with partially preserved upper dentition), and it is a 3D body fossil. Its type locality is northeast edge, Cancha de Bochas, which is in a Tuvalian terrestrial siltstone in the Ischigualasto Formation of Argentina.