Proplatyarthrus
Introduction '''''Proplatyarthrus''''' is an extinct genus of ground sloths of the family Megalonychidae, endemic to Chubut Province, Argentina in South America.
Taxonomy ''Proplatyarthrus'' was named and a talus bone described by Florentino Ameghino in 1905.It was assigned to Megalonychidae by Carroll in 1988.
References
Bibliography *
Further reading * R. Hitz, M. Reguero, A. R. Wyss and J. J. Flynn. 2000.New interatheriines (Interatheriidae, Notoungulata) from the Paleogene of Central Chile and Southern Argentina. Fieldiana: Geology (New Series) 42:1-26