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. 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.
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
Source: Wikispecies, Wikipedia: All text is available under the terms of the GNU Free Documentation License