Soriacebus adrianae was named by Fleagle (1990). Its type specimen is MACN-SC 59, a mandible (Partial mandible preserving rp3-4 the roots of rc1 p2 and incisor alveoli), and it is a 3D body fossil. Its type locality is Portezuelo Sumich Sur, Pinturas Fm., Lago Buenos Aires, Santa Cruz, which is in a Burdigalian terrestrial horizon in the Pinturas Formation of Argentina.