After Pascual, Goin & Carlini, 1994, McKenna & Bell, 1997, Sánchez-Villagra & Kay, 1997, Flynn & Wyss, 1999 and Sánchez-Villagra, Kay & Anaya-Daza, 2000

<==o †Simpsonitheria Szalay, in Szalay, Novacek & McKenna, eds., 1993
   |--o †Argyrolagoidea Ameghino, 1904 sensu Simpson, 1970 [Groeberioidea Clemens & Marshall, 1976; Patagonioidea Pascual & Carlini, 1987; Groeberida Pascual, Goin & Carlini, 1994]
   |  |?- †Gashternia ctalehor Simpson, 1935; U.Paleoc. SA. [Gashterniidae Marshall, 1987]
   |  |?-o †Argyrolagidae Ameghino, 1904
   |  |  |-- †Proargyrolagus bolivianus Wolff, 1984
   |  |  `--+-- †Hondalagus altiplanensis Villarroel & Marshall, 1988
   |  |     |--o †Argyrolagus Ameghino, 1904 [Synonym of †Microtragulus Ameghino, 1904? (McKenna & Bell, 1997)]
   |  |     |  |-- †A. palmeri
   |  |     |  |-- †A. parodii
   |  |     |  `-- †A. scagliai
   |  |     `--o †Microtragulus Ameghino, 1904 [incl. Argyrolagus Ameghino, 1904 (sensu McKenna & Bell, 1997)?]
   |  |        |-- †M. catamarcensis
   |  |        |-- †M. argentinus
   |  |        |-- †M. reigi
   |  |        `?- †M. bolivianus
   |  `--o †Groeberiidae Patterson, 1952 sensu Flynn & Wyss, 1999 [Groeberioidea Clemens & Marshall, 1976; Patagonioidea Pascual & Carlini, 1987; Groeberida Pascual, Goin & Carlini, 1994]
   |     |--o †Groeberia Patterson, 1952 [Groeberiinae Patterson, 1952 sensu Flynn & Wyss, 1999; Groeberioidea Clemens & Marshall, 1976; Groeberida Pascual, Goin & Carlini, 1994]
   |     |  |-- †G. minoprioi Patterson, 1952 [G. minopriori]
   |     |  `-- †G. pattersoni Simpson, 1970a
   |     `--o †Patagoninae Pascual & Carlini, 1987 sensu Flynn & Wyss, 1999 [Patagonidae Pascual & Carlini, 1987; Patagonioidea Pascual & Carlini, 1987]
   |        |-- †Patagonia Pascual & Carlini, 1987
   |        `-- †Klohnia charrieri Flynn & Wyss, 1999
   `--o †Caroloameghinioidea Ameghino, 1901 sensu Marshall, in Archer, 1987
      |--o †Glasbius Clemens, 1966 [Glasbiidae Clemens, 1966 sensu Archer, 1984]
      |  |-- †G. intricatus Clemens, 1966
      |  `-- †G. twitchelli Archibald, 1982
      `--o Caroloameghiidae Ameghino, 1901
         |?- †Roberthoffstetteria nationalgeographica Marshall, de Muizon & Sigé, 1983 [is a polydolopimorphan sensu Goin, et al., 2003]
         `--+-- †Procaroloameghinia pricei Marshall, 1982
            `--+-- †Robertbutleria mastodontoidea Marshall, in Archer, 1987
               `-- †Caroloameghinia tenuis Ameghino, 1901 [Caroloameghina]

Reference(s):

 

Special thanks to:

Jos H. M. Dols, for gathering additional information and missing species.