Synonyms

• Unaüs Rafinesque, 1815: 57

Type species: Bradypus unau Link, 1795, by subsequent designation (Palmer 1904: 700) [corrected spelling is Unaues Rafinesque, 1815 according ICZN 1999: Art. 32.5.

• Choelopus Lichtenstein, 1818: 20 [incorrect subsequent spelling of Choloepus Illiger].
• Unaus Gray, 1821: 305

Type species: Bradypus didactylus Linnaeus, 1758, by monotypy.

• Cholaepus Schinz, 1821: 328 [incorrect subsequent spelling of Choloepus Illiger].
• Cholaepus Gray, 1825: 343 [incorrect subsequent spelling of Choloepus Illiger].
• Chaelopus Gray, 1827: 275 [incorrect subsequent spelling of Choloepus Illiger].
• Choelopus Sclater, 1873: 253 [incorrect subsequent spelling of Choloepus Illiger].
• Cholopus Agassiz, 1847: 83 [unjustified emendation of Choloepus Illiger].
• Choelopus Sanborn, 1953: 5 [incorrect subsequent spelling of Choloepus Illiger].

Primary references

• Illiger, J.K.W. 1811. Prodromus systematis mammalium et avium additis terminis zoographicis utriusque classis, eorumque versione germanica. C. Salfield: Berolini. xviii + 302 pp. BHL Reference page. 
• Rafinesque, C.S. 1815. Analyse de la nature, ou tableau de l’univers et des corps organisés. Palerme: l’Imprimerie de Jean Barravecchia, 224 pp.
• Gray, J.E. 1821. On the natural arrangement of vertebrose animals. London Med. Reposit. 15: 297–311.
• Gray, J.E. 1827. A synopsis of the species of the class Mammalia. In The animal kingdom arranged in conformity with its organization, by the Baron Cuvier, with additional descriptions of all the species hitherto named, and of many not before noticed, by Edward Griffith . . . and others, ed. E. Griffith, 1–296. London: Geo. B. Whittaker, 5: 1–392.
• Palmer, T.S. 1904. Index generum mammalium: A list of the genera and families of mammals. N. Amer. Fauna 23: 1–984.

Links

• Choloepus in Mammal Species of the World.
  Wilson, Don E. & Reeder, DeeAnn M. (Editors) 2005. Mammal Species of the World – A Taxonomic and Geographic Reference. Third edition. ISBN 0-8018-8221-4.