''Proplatyarthrus'' is an extinct genus of

ground sloth Ground sloths are a diverse group of extinct sloths in the mammalian superorder Xenarthra. The term is used to refer to all extinct sloths because of the large size of the earliest forms discovered, compared to existing tree sloths. The Caribbe ...

s of the family Megalonychidae, endemic to Chubut Province, Argentina in South America.PaleoBiology Database: ''Proplatyarthrus'', basic info
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Taxonomy

''Proplatyarthrus'' was named and a talus bone described by Florentino Ameghino in 1905. It was assigned to Megalonychidae by Carroll in 1988.R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698

References

Bibliography

* 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 Prehistoric sloths Oligocene xenarthrans Oligocene genus extinctions Oligocene mammals of South America Deseadan Tinguirirican Paleogene Argentina Fossils of Argentina Fossil taxa described in 1905 Taxa named by Florentino Ameghino Golfo San Jorge Basin Sarmiento Formation {{paleo-mammal-stub

Taxonomy

References

Bibliography

Further reading