Megalonychidae
Family within Pilosa
Ahytherium
Australonyx
Deseadognathus
Diodomus
Eucholoeops
Hapaloides
Hyperleptus
Megalonychops
Megalonychotherium
Megalonyx
Megistonyx
Meizonyx
Mesopotamocnus
Nohochichak
Ortotherium
Paranabradys
Paulocnus
Pliometanastes
Pliomorphus
Proplatyarthrus
Proschismotherium
Protomegalonyx
Pseudortotherium
Sinclairia
Torcellia
Urumacocnus
Xibalbaonyx
Zacatzontli