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The Conversation
The Conversation
Larisa R. G. DeSantis, Associate Professor of Biological Sciences, Vanderbilt University

Giant ground sloths’ fossilized teeth reveal their unique roles in the prehistoric ecosystem

Biology Letters Vanderbilt University
Harlan's ground sloth fossil skeleton excavated and displayed at the La Brea Tar Pits in Los Angeles. Larisa DeSantis
animal hanging from a branch looks upside down at the camera
A two-toed sloth at the Nashville Zoo. Larisa R. G. DeSantis

Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging from a branch. Today’s sloths – commonly featured on children’s backpacks, stationery and lunch boxes – are slow-moving creatures, living inconspicuously in Central American and South American rainforests.

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