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Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Mammalia
Subclassis: Theria
Infraclassis: Placentalia
Ordo: Pilosa
Subordo: Folivora
Familia: †Megatheriidae
Subfamilia: Schismotheriinae
Genus: Hapalops
Species: H. indifferens - H. longicers - H. longipes - H. latus - H. cadens - H. congermanus - H. gallaicus - H. ruetimeyeri


Hapalops Ameghino, 1887


Hapalops is an extinct genus of ground sloth from the late Oligocene of South America.

Though related to the giant Megatherium, Hapalops was much smaller, measuring about 1 metre (3.3 ft) in length. Like most extinct sloths it is categorized as a ground sloth, but it is believed that the smaller size of Hapalops allowed it to engage in some climbing behaviors[1]. It had a robust body, short skull and long limbs with large, curved claws. When it did visit the ground the animal probably walked on the knuckles of its forelimbs, like a gorilla. Hapalops had very few teeth with no incisors, the mandible included only four pairs of teeth.[2][3]

Hapalops represents a taxonomic nightmare in need of revision with approximately 30 different species assigned to the genus, most of which are likely superfluous.


1. ^ White, J. 1993. Indicators of locomotor habits in Xenarthrans: Evidence for locomotor heterogeneity among fossil sloths. Journal of Vertebrate Paleontology, 13(2): 230-242
2. ^ Palmer, D., ed (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 207. ISBN 1-84028-152-9.
3. ^ Grupopaleo (in Spanish)

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