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Secret to Ancient Sloths' Aquatic Lives? Dense Bones

Skeletons and restoration of Thalassocnus, the marine sloth.
Skeletons and restoration of Thalassocnus, the marine sloth.Photographs and mounting: Philippe Loubry; restoration, William L. Parsons

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Skeletons and restoration of Thalassocnus, the marine sloth.
Skeletons and restoration of Thalassocnus, the marine sloth.Photographs and mounting: Philippe Loubry; restoration, William L. Parsons

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