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Present The three-toed sloths are arboreal neotropical mammals. They are the only members of the genus Bradypus and the family Bradypodidae. The four living species of three-toed sloths are the brown-throated sloth, the maned sloth, the pale-throated sloth, and the pygmy three-toed sloth. Thalassocnus mixed Three toed sloth. Future Three toed Thalassocnus most complete skeleton preserved and measures from snout to tail 2.55 meters (8.4 ft). Based on a femur-to-body-length ratio, the three toed specimen—probably a female—measured 2.1 meters (6.9 ft) in life, and the Three specimen 3.3 meters (11 ft).The lower jaw progressively elongated and became more spoon-shaped, possibly mimicking the function of the splayed incisor teeth in ruminants.Three toed may have used their claws for loosening dirt, cutting vegetation, grasping food, or anchoring themselves to the seafloor.