After McKenna & Bell, 1997
<==o Megalonychidae Gervais, P., 1855 (kaksivarvaslaiskiaiset) [Synonyms] |?- †Imagocnus MacPhee & Iturralde-Vinent, 1994 |--o †Ortotheriinae Ameghino, 1889 [Ortotheriidae Ameghino, 1889; Ortotheriinae Trouessart, 1898] | |-- †Proschismotherium Ameghino, 1902 | |-- †Eucholoeops Ameghino, 1887 | |-- †Pseudortotherium Scillato-Yané, 1981 | |-- †Megalonychotherium Scott, 1904 | |-- †ParanabradysScillato-Yané, 1980 | |-- †Pliomorphus Ameghino, 1885 | |-- †Torcellia Kraglievich, 1923 | |-- †Ortotherium Ameghino, 1885 [Orthotherium Roger, 1887] | |-- †Menilaus Ameghino, 1891 | |-- †Diodomus Ameghino, 1885 [Platyodon Ameghino,1881] | |-- †Habanocnus Mayo, 1978 | `-- †Paulocnus Hooijer, 1962 `--o Megalonychinae Gervais, P., 1855 [Synonyms] |?- †Pliometanastes Hirschfeld & Webb, 1968 |?- †Sinclairia Ameghino, 1912 [possibly synon. of Pliometanastes (McKenna & Bell, 1997)] |?- †Megalonychops Kraglievich, 1926 |?- †Valgipes Gervais, 1874 |?- †Meizonyx Webb, 1985 |--o †Megalonychini Gervais, P., 1855 [Mégalonycidés Gervais, P., 1855; Megalonycidae Ameghino, 1889] | |--o †Mesocnina Varona, 1974 [Mesocnini Varona, 1974; Mesocninae Arredondo, 1988; Mesocnina McKenna & Bell, 1997, +Cubanocnini Varona, 1974] | | |--o †Neocnus Arredondo, 1961 [?Microcnus Matthew, 1931; ?Cubanocnus Kretzoi, 1968] | | | |-- †N. major | | | |-- †N. gliriformis [Microcnus gliriformis] | | | |-- †N. comes | | | |-- †N. dousman MacPhee, White & Woods, 2000 | | | `-- †N. toupiti MacPhee, White & Woods, 2000 | | `-- †Parocnus serus Miller, 1929 [?Mesocnus Matthew, 1931] | `--o †Megalonychina Gervais, P., 1855 [Mégalonycidés Gervais, P., 1855; Megalonycidae Ameghino, 1889; Megalonycina Kraglievich, 1925] | |--o †Megalocni Kraglievich, 1923 [Synonyms] | | |--o †Megalocnus Leidy, 1868 [Myomorphus Pomel, 1868] | | | |-- †M. rodens Leidy, 1868 | | | `-- †M. zile MacPhee, White & Woods, 2000 | | `-- †Neomesocnus Arredondo, 1961 | `--o †Megalonychi Gervais, P., 1855 [Mégalonycidés Gervais, P., 1855; Megalonycidae Ameghino, 1889] | |-- †Protomegalonyx Kraglievich, 1925 | `--o †Megalonyx Harlan, 1825 [Synonyms] | |-- †M. wheatleyi | |-- †M. curvidens | |-- †M. jeffersoni | |-- †M. leidyi | |-- †M. loxodon | |-- †M. scalper | `-- †M. tortulus `--o Choloepodini Gray, 1871 [Choloepina Gray, 1871; Choloepodinae Gill, 1874; +Acratocnini Varona, 1974] (kaksivarpaislaiskiaiset) |--o Choloepus Illiger, 1811 [Choloepodina Gray, 1871; Coeloepina Gray, 1871: Coeloepodina McKenna & Bell, 1997] ()? | |-- C. didactylus (kaksivarvaslaiskiainen) | `-- C. hoffmanni (hoffmanninlaiskiainen) `--o †Acratocnina Varona, 1974 [Acratocnini Varona, 1974; Acratocnina McKenna & Bell, 1997] |-- †Miocnus Matthew, 1931 |--o †Acratocnus Anthony, 1916 | |-- †A. odontrigonus Anthony, 1916 | `-- †A. ye MacPhee, White & Woods, 2000 `-- †Synocnus comes Paula Couto, 1967
Reference(s):
- Burkitt, J. H., 1995: Mammals: A world listing of living and extinct species.
–iNet: [This file no longer awailable, looking for new source and link] - Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698. - MacPhee, R. D. E., White, J. L. & Woods, C. A., 2000: New megalonychid sloths (Phyllophaga: Xenarthra) from Quaternary of Hispaniola.
--American Museum Novitates: #3303, pp. 1-32 - McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - Nowak, R. M., 1991: Walker's Mammals of the World; Part 1.
–The Johns Hopkins University Press, Baltimore and London, 1991, xlviii-642-lxiii - Nowak, R. M., 1991: Walker's mammals of the World; Part 2.
–The Johns Hopkins University Press, Baltimore and London, 1991, xii-643-1629