Nematherium

Extinct genus of ground sloths

Nematherium Temporal range: Mid Miocene (Santacrucian) ~17.5–16.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓

Nematherium angulatum skull and jaw
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Pilosa
Superfamily:	Mylodontoidea
Genus:	†Nematherium Ameghino 1887
Type species
†Nematherium angulatum Ameghino 1887
Other species
N. birdi Simpson 1941 N. longirostris Ameghino 1891 N. auca Ameghino 1894 N. declivum Ameghino 1894

Nematherium is an extinct genus of ground sloth belonging to Mylodontoidea, it is either considered to be a member of Mylodontidae^[1] or Scelidotheriidae.^[2] It lived during the Middle Miocene epoch (Santacrucian).^[3] Fossils have been found in the Cura-Mallín Formation of Chile and the Santa Cruz and Sarmiento Formations of Argentina.^[4]

References

Wikimedia Commons has media related to Scelidotheriidae.

^ Brandoni, Diego; Novo, Nelson M.; Tarquini, Juliana; Tejedor, Marcelo F. (2019). "First record of Nematherium (Xenarthra, Mylodontidae) from the Pinturas Formation (Burdigalian, early Miocene), Santa Cruz Province, Argentina". Journal of South American Earth Sciences. 96: 102324. Bibcode:2019JSAES..9602324B. doi:10.1016/j.jsames.2019.102324. S2CID 202907801.
^ "Correction to: Reassessing the phylogeny and divergence times of sloths (Mammalia: Pilosa: Folivora), exploring alternative morphological partitioning and dating models". Zoological Journal of the Linnean Society. 196 (4): zlac092. 2022-10-18. doi:10.1093/zoolinnean/zlac092. ISSN 0024-4082.
^ Gaudin, T. J. (2004). "Phylogenetic relationships among sloths (Mammalia, Xenarthra, Tardigrada): The craniodental evidence". Zoological Journal of the Linnean Society. 140 (2): 255–305. doi:10.1111/j.1096-3642.2003.00100.x.
^ Nematherium at Fossilworks.org

†Argyromanis †Orthoarthrus
Cyclopedidae	Cyclopes †Palaeomyrmidon
Myrmecophagidae	Myrmecophaga †Neotamandua †Protamandua Tamandua

†Megalocnidae	Acratocnus Imagocnus Megalocnus Mesocnus Miocnus Neocnus Parocnus

Choloepus
†Scelidotheriidae	Analcitherium Catonyx Chubutherium Nematherium? Neonematherium Proscelidodon Scelidodon Scelidotheridium Scelidotheriops Scelidotherium Sibyllotherium Valgipes

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↓

Neohapalops Thalassocnus?
Nothrotheriinae	Amphibradys Aymaratherium Chasicobradys Huilabradys Lakukullus Mcdonaldocnus Mionothropus Nothropus Nothrotheriops Nothrotherium Pronothrotherium Xyophorus

Thalassocnus?
Planopsinae	Planops Prepotherium Prepoplanops Proprepotherium
Megatheriinae	Anisodontherium Diabolotherium Eomegatherium Eremotherium Megathericulus Megatheridium Megatheriops Megatherium Ocnopus Perezfontanatherium Plesiomegatherium Pliomegatherium Proeremotherium Promegatherium Pyramiodontherium Sibotherium Urumaquia