Megatherium (from the Greek mega, meaning "great", and therion, "beast") was a genus of elephant-sized ground sloths endemic to Central and South America that lived from the late Pliocene through the end of the Pleistocene. Its size was exceeded by only a few other land mammals, including mammoths and Paraceratherium.
Read more about Megatherium: Description, Evolution, Habitat, Paleobiology, Extinction