[MM] Gondwanatherium patagonicum
DESCRIBER Bonaparte, 1986
TIME Cretaceous Late
SUBCLASS Incertae Sedis
FOSSILSITE Los Alamitos Formation, Rio Negro Province, Argentina
Differs from the Tertiary genus Sudamerica in being smaller, in having occlusal surface of the molars made of three asymmetrical lophs and in having enamel strip arround occlusal surface divided into parts, rather than continious.