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Promegatherium Temporal range: Late Miocene (Huayquerian) ~9.0–6.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Promegatherium nanum and Nesodon
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Pilosa
Superfamily:	Megatherioidea
Clade:	†Megatheria
Family:	†Megatheriidae
Subfamily:	†Megatheriinae
Genus:	†Promegatherium Ameghino, 1883
Species
†P. cabreri †P. parvulum †P. remulsum †P. smaltatus

Promegatherium ("before Megatherium") is a genus of prehistoric xenarthrans that lived in Argentina, during the Late Miocene. This genus is regarded as closely related to the later, and more famous genus, Megatherium, hence the reference in the name. The first specimens of Promegatherium were originally described by the biologist Florentino Ameghino in 1883.

Fossils of Promegatherium have been found in the Ituzaingó Formation in Argentina.

References

1. Promegatherium at Fossilworks.org

Further reading

• Family tree of Megatheriidae
• M. C. McKenna & S. K. Bell (eds.) (1997): Classification of mammals, above the species level. New York: Columbia University Press.

v t e Pilosan genera
Kingdom: Animalia Phylum: Chordata Class: Mammalia Superorder: Xenarthra
Pilosa Vermilingua †Argyromanis †Orthoarthrus Cyclopedidae Cyclopes †Palaeomyrmidon Myrmecophagidae Myrmecophaga †Neotamandua †Protamandua Tamandua Folivora †Pseudoglyptodon †Megalocnidae Acratocnus Imagocnus Megalocnus Mesocnus Miocnus Neocnus Parocnus Mylodontoidea Choloepus †Scelidotheriidae Analcitherium Catonyx Chubutherium Nematherium? Neonematherium Proscelidodon Scelidodon Scelidotheridium Scelidotheriops Scelidotherium Sibyllotherium Valgipes †Mylodontidae Baraguatherium Eionaletherium Nematherium Octodontobradys Octodontotherium Octomylodon Orophodon Paroctodontotherium Pseudoprepotherium Urumacotherium Mylodontinae Archaeomylodon Brievabradys? Glossotheriopsis Megabradys Mylodonopsis Ocnotherium Oreomylodon? Promylodon Ranculcus Strabosodon Lestodontini Bolivartherium Lestobradys Lestodon Magdalenabradys Sphenotherus Thinobadistes Mylodontini Glossotheridium Glossotherium Kiyumylodon Mylodon Paramylodon Pleurolestodon Simomylodon Megatherioidea see below↓
Megatherioidea Megatherioidea Bradypus †Hapalops †Hiskatherium †Hyperleptus †Pelecyodon †Schismotherium †Similhapalops †Megalonychidae Deseadognathus Hapalops? Hyperleptus? Mesopotamocnus Paulocnus Proplatyarthrus Urumacocnus Ortotheriinae Diodomus Eucholoeops Hapaloides Megalonychotherium Ortotherium Paranabradys Pliomorphus Proschismotherium Pseudortotherium Torcellia Megalonychinae Ahytherium Australonyx Megalonychops Megalonyx Megistonyx Meizonyx Nohochichak Pattersonocnus Pliometanastes Protomegalonyx Sinclairia Xibalbaonyx Zacatzontli †Megatheria Analcimorphus Nothrotheriidae Neohapalops Thalassocnus? Nothrotheriinae Amphibradys Aymaratherium Chasicobradys Huilabradys Lakukullus Mcdonaldocnus Mionothropus Nothropus Nothrotheriops Nothrotherium Pronothrotherium Xyophorus Megatheriidae Thalassocnus? Planopsinae Planops Prepotherium Prepoplanops Proprepotherium Megatheriinae Anisodontherium Diabolotherium Eomegatherium Eremotherium Megathericulus Megatheridium Megatheriops Megatherium Ocnopus Perezfontanatherium Plesiomegatherium Pliomegatherium Proeremotherium Promegatherium Pyramiodontherium Sibotherium Urumaquia

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• Prehistoric placental genera
• Prehistoric sloths
• Miocene xenarthrans
• Miocene genus extinctions
• Miocene mammals of South America
• Huayquerian
• Neogene Argentina
• Fossils of Argentina
• Ituzaingó Formation
• Fossil taxa described in 1883
• Taxa named by Florentino Ameghino
• Prehistoric mammal stubs