Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Superordo: Xenarthra
Ordo: Pilosa
Subordo: Folivora
Familia: †Megatheriidae
Subfamilia: †Megatheriinae
Tribus: Nothrotheriini
Genus: Pronothrotherium
Pronothrotherium is an extinct genus of ground sloths from Argentina and Uruguay.[1][2] Fossils of Pronothrotherium have been found in the Ituzaingó Formation of Argentina.[3] The body weight of the animal has been estimated at 937 kg (2,066 lb).[4]
References
"Pronothrotherium". Paleobiology Database. Retrieved 2012-10-11.
Frick, C. (1921). "Extinct Vertebrate Faunas of the Badlands of Bautista Creek and San Timoteo Canon, Southern California". Bulletin of the Department of Geology. Vol. XII. University of California, Berkeley. p. 349. Retrieved 2012-10-11.
Pronothrotherium at Fossilworks.org
Toledo, N.; Bargo, M. S.; Vizcaíno, S. F.; De Iuliis, G.; Pujos, F. (2017). "Evolution of body size in anteaters and sloths (Xenarthra, Pilosa): phylogeny, metabolism, diet and substrate preferences". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 106 (4): 289–301. Bibcode:2015EESTR.106..289T. doi:10.1017/S1755691016000177. hdl:11336/56403.
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