After McKenna & Bell, 1997, Cerdeño, E. & Bond, M., 1998 (Fig. 11c), and Reguero, Dozo & Cerdeño, 2007
<==o †Pachyruchinae Kraglievich, 1934 sensu Cerdeño, E. & Bond, M., 1998 (Fig. 11c) |--+--o †Tremacyllus | | |-- †T. impressus (Ameghino, 1888) | | |?- †T. laticeps | | `-- †T. incipiens | `--+?- †Medistylus dorsatus (Ameghino, 1903) Stirton, 1952 [Phanophilus dorsatus Ameghino, 1903 (preoccupied); Phanophilus dorsatus Ameghino; Loomis, 1914; Medistylus dorsatus (Ameghino) Stirton, 1952] U.Olig. SSAm. | |-- †Prosotherium garzoni Ameghino, 1897 | `-- †Propachyrucos smithwoodwardi Ameghino, 1897 `--+-- †Pachyruchos moyanoi Ameghino, 1885 `--o †Paedotherium Burmeister, 1888 [Pachyrukhos Ameghino, 1885 in partim; Raulringueletia Zetti, 1972] |?- †P. dolichognathum (Zetti, 1972) [Raulringueletia dolichognathus Zetti, 1972] |?- †P. isolinense |?- †P. brocherence |-- †P. bonaerense (Ameghino, 1887) [P. insigne] `--+-- †P. typicum (Ameghino, 1887) `-- †P. minor Cabrera, 1937
Reference(s):
- Cerdeño, E. & Bond, M., 1998: Taxonomic revision and phylogeny of Paedotherium and Tremacyllus (Pachyruchinae, Hegetotheriidae, Notoungulata) from the Late Miocene to the Pleistocene of Argentina.
–Journal of Vertebrate Paleontology: vol. 18, #4, pp. 799-811 - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - Reguero, M. A., Dozo, M. T. & Cerdeño, E., 2007: A poorly known rodentlike mammal (Pachyrukhinae, Hegetotheriidae, Notoungulata) from the Deseadan (Late Oligocene) of Argentina. Paleoecology, biogeography, and radiation of the rodentlike ungulate in South America.
–Journal of Paleontology: Vol. 81, #6, pp. 1301-1307 [doi: 0022-3360/07/0081-1301]