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Megalonyx (Greek, "great-claw") is an extinct genus of ground sloths of the family Megalonychidae, native to North America.It evolved during the Pliocene Epoch and became extinct at the end of the Late Pleistocene, living from ~5 million to ~13,000 years ago. [3]
Based on fossil trackways and the anatomy of its inner ear, which is considerably different from living sloths and more similar to those of armadillos, species of Megatherium, while probably not capable of moving at considerable speed due to limitations of their skeletal anatomy (with one study estimating a max speed of approximately 2.2 metres ...
Ground sloths varied widely in size from under 100 kilograms (220 lb) in the Caribbean ground sloths, to 3,700–4,100 kilograms (8,200–9,000 lb) in the largest ground sloth genera Megatherium, Lestodon and Eremotherium. [8] [9] The bodies of ground sloths were generally barrel-shaped, with a broad pelvis. [10]
Sloths are almost helpless on the ground but are able to swim. [4] The shaggy coat has grooved hair that is host to symbiotic green algae which camouflage the animal in the trees and provide it nutrients. The algae also nourish sloth moths, some species of which exist solely on sloths. [5]
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Unfortunately, the bulk of sloth species that once roamed the earth -- some of which grew to be the size of elephants -- cannot say the same. Long ago, there Sloths were once as large as elephants
PART MUST COURTESY GEORGIA TECH. For Reuters customers only. It looks like a sloth and behaves like a sloth. (SOUNDBITE) (English) PROFESSOR MAGNUS EGERSTEDT, GEORGIA INSTITUTE OF TECHNOLOGY ...
Eremotherium laurillardi skeleton at the Smithsonian National Museum of Natural History. Eremotherium was slightly larger than the closely related Megatherium in size, reaching an overall length of 6 metres (20 ft) and a height of 2 metres (6.6 ft) while on all fours, possibly up to 4 metres (13 ft) when it reared up on its hind legs. [25]