Full reference: G. W. Rougier, M. S. de la Fuente, and A. B. Arcucci. 1995. Late Triassic turtles from South America. Science 268:855-858
Sister taxa: none
Type specimen: PULR 68, a skeleton. Its type locality is 2 km NE of La Esquina, which is in a Norian floodplain siltstone in the Los Colorados Formation of Argentina.