After McKenna & Bell, 1997 and de Muizon, McDonald, Salas & Urbina, 2003, 2004
Nothrotheriidae Ameghino, 1920 sensu de Muizon, McDonald, Salas & Urbina, 2004
Nothrotherinae Ameghino, 1920
Megalonychidae: Nothrotherinae Ameghino; Kraglievich, 1923
Megalonychidae: Nothrotheriinae Ameghino; Simpson, 1945
Megatheriidae? Nothrotheriinae Ameghino; Patterson & Pascual, 1968, 1972
Megatheriidae: Nothrotheriinae Ameghino; Paula Couto, 1981
Megatheriidae: Nothrotheriinae Ameghino; Engelmann, 1985
Megatheriidae: Nothrotheriinae Ameghino; Patterson et al., 1992
Nothrotheriidae Ameghino; Gaudin, 1994
Megatheriidae: Megatheriinae: Nothrotheriini Ameghino; McKenna & Bell, 1997
Nothrotheriidae Ameghino; Gaudin & De Iuliis, 1999
Nothrotheriidae Ameghino; de Muizon, McDonald, Salas & Urbina, 2004
Reference(s):
- McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631 - de Muizon, C., McDonald, H. G., Salas, R. & Urbina, M., 2004: The youngest species of the aquatic sloth Thalassocnus and a reassessment of the relationships of the nothrothere sloths (Mammalia: Xenarthra). –Journal of Vertebrate Paleontology: Vol. 24, #2, pp. 387-397