Archaeotypotherium is an extinct genus of notoungulate belonging to the family Archaeohyracidae that lived during the Oligocene of Argentina and Chile. It was first described in 1903 by the Argentine paleontologist Santiago Roth.Roth S. (1903) Noticias preliminares sobre nuevos mamíferos fósiles del Cretáceo superior y Terciario inferior de la Patagonia. Revista del Museo de La Plata 11: 133-158
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