Mammalia - Xenarthra - Megalonychidae
Synonyms: Choloepidae Gray 1871, Choloepina Gray 1871
Parent taxon: Megatherioidea according to L. Varela et al. 2019
See also Adam 1999, Ameghino 1891, Ameghino 1894, Ameghino 1897, Carroll 1988, Gaudin 1995, Hay 1902, Kurten and Anderson 1980, McDonald and Carranza-Castañeda 2017, McDonald and Muizon 2002, McDonald and Naples 2007, McDonald et al. 2013, Muizon and McDonald 1995, Nowak 1991, Pujos et al. 2007, Thurmond and Jones 1981 and White and MacPhee 2001
Sister taxa: Hiskatherium, Megatheria, Pelecyodon, Schismotherium, Similhapalops
Subtaxa: Amphihapalops Amphiocnus Analcimorphus Choloepodinae Deseadognathus Diheterocnus Eleutherodon Eucholoeops Eugeronops Geronops Hapalops Holomegalonyx Hyperleptus Mecorhinus Megalocninae Megalonychinae Megalonychops Megalonychotherium Meizonyx Mesocnus Mesopotamocnus Metopotherinae Metopotherini Microcnus Miocnus Nohochichak Nothropus Ocnopodinae Ortotheriinae Ortotherium Paranabradys Paraplanops Pattersonocnus Pliomorphus Protomegalonyx Pseudhapalops Pseudortotherium Torcellia Trematherium Urumacocnus Xibalbaonyx Zacatzontli
Ecology: ground dwelling herbivore