APPENDIX

Revision of the changes that occurred in the last century in the nomenclature of the Family Argyrolagidae and the genera Microtragulus and Argyrolagus.

Author and year of publication and erected family and species or used names

Comments
Ameghino, 1904
Family Tragulidae
Microtragulus argentinus
This taxon was founded on the base of metatarsal and tarsal bones
Ameghino, 1904
Family Argyrolagidae
Argyrolagus palmeri
A. palmeri is the type species of the genus Argyrolagus. Microtragulus argentinus and A. palmeri were published in the same year, but Microtragulus has priority because was published in an earlier issue of the same volume
Kraglievich, 1931
Family Argyrolagidae
Microtragulus catamarcensis
This author named a small dentary coming from Catamarca Province as Argyrolagus catamarcensis. Posteriorly Simpson (1970a) proposed the new combination Microtragulus catamarcensis
Rusconi, 1936
Family Argyrolagidae
Microtragulus = Argyrolagus
This author suggested the synonymy but he did not consider the priority of Microtragulus under Argyrolagus and continued the use of Argyrolagus and Argyrolagidae (See also Rusconi, 1967)
Reig, 1955, 1958
Family Microtragulidae
Microtragulus = Argyrolagus
This author established this synonymy after he and Kraglievich studied the then new specimen referred as Microtragulus sp. (probably the holotype of Argyrolagus scagliai) and began the use of Microtragulidae with Microtragulus as the only valid genus
Ringuelet, 1966
Family Microtragulidae
Microtragulus = Argyrolagus
M. argentinus = A. palmeri
This author established the priority of Microtraguidae over Argyrolagidae, Microtragulus under Argyrolagus, and M. argentinus  under A. palmeri. The material there figured (but not catalogued; see p. 58) was referred as M. argentinus but later assigned to the neotype of A. parodii (Simpson, 1970b) and catalogued as MLP 62-VII-27-81
Simpson, 1970a
Family Argyrolagidae
Microtragulus (including M. argentinus, M. catamarcensis, M. reigi)
This author made the first comprehensive attempt in order to resolve the nomenclatural problems in the family (see text for a complete explanation)
Hoffstetter and Villarroel, 1974
Family Microtragulidae
Microtragulus (including M. reigi, M. catamarcensis, and M. bolivianus
They validated the genus Microtragulus (including Argyrolagus) and proposed tentatively the erection of the subgenus Microtragulus and Argyrolagus. Microtragulus bolivianus is presented as Microtragulus ( Argyrolagus ?) bolivianus in the original publication. The authors did not formalize the taxonomic status of the genera included in Argyrolagus
Tonni et al., 1992
Family Microtragulidae
Argyrolagus palmeri
These authors included these taxon names in a taxomic list of the mammals recovered at Monte Hermoso (Buenos Aires) and included in the Montehermosan SALMA. No explanation was given in relation to the exclusion of M. argentinus from this list
Cione and Tonni, 1995
Family Microtragulidae
Microtragulus (including M. reigi)
Argyrolagus (including A. palmeri, A. scagliai)
M. argentinus is not included among the taxa recovered at Monte Hermoso, Buenos Aires
Goin, 1995
Family Argyrolagidae
Microtragulus (including M. argentinus, M. reigi)
Argyrolagus (including A. palmeri, A. scagliai)
The author followed the proposal of Simpson (1970a)
Vizcaíno et al., 2004
Family Microtragulidae
Microtragulus reigi
Argyrolagus scagliai
The authors followed Tonni et al. (1992)
Sanchez-Villagra, 2001; Goin et al., 2000; Zimicz, 2011; Ortiz et al., 2012; Goin and Abello, 2013; Tomassini et al., 2013; García López and Babot, 2015.
Family Argyrolagidae
Microtragulus (including M. argentinus, M. reigi, M. bolivianus)
Argyrolagus (including A. palmeri, A. scagliai)
These authors followed the proposal of Simpson (1970a)