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| | Comparative Placentation |
 | | The most easily followed nomenclature and distribution map, however, is that of Wetzel (1985) which indicates that the brown-throated three-toed sloth (Bradypus variegatus) is the most widely distributed sloth species in South America. |
 | | Meritt, D.A. and Meritt, G.F.: Sex ratios of Hoffmann's sloth, Choloepus hoffmanni Peters, and three-toed sloth, Bradypus infuscatus Wagler, in Panama. |
 | | Da Mota, D.L., Yamada, J., Gerge, L.L. and Pinheiro, P.B.: An immunohistochemical study on the pancreatic endocrine cells of the three-toed sloth, Bradypus variegates. |
| medicine.ucsd.edu /cpa/sloth.htm (3071 words) |
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