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sloth lemur
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The sloth lemurs (Palaeopropithecidae) comprise an extinct clade of lemurs that includes four genera. The common name can be misleading, as members of Palaeopropithecidae were not closely related to sloths, but instead to lemurs. This clade has been dubbed the ‘‘sloth lemurs’’ because of remarkable postcranial convergences with South American sloths. Despite postcranial similarities, however, the hands and feet show significant differences. Sloths possess long, curved claws, while sloth lemurs have short, flat nails on their distal phalanges like most primates.
== Diet ==
Members of the Palaeopropithecidae family appear to have eaten a mix of fruit, nuts, and foliage. The sloth lemurs were mixed-feeders rather than specialized browsers who ate a mixed diet based on seasonality. However, on the basis of high robusticity of the mandibular corpus, Palaeopropithecus and Archaeoindris can be considered highly folivorous.〔 The Palaeopropithecidae family exhibited molar megadonty, small deciduous teeth with low occlusal length ratios, and a decoupling of the speed of dental and body growth with acceleration of dental development relative to body growth. These attributes were observed in conjunction with the finding that Palaeopropithecidae experienced prolonged periods of gestation.
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