Megalonyx (image) American Museum of Natural History Share Print E-Mail Caption A photo of a fossil of Megalonyx, a megatherioid ground sloth from North America, on display at the American Museum of Natural History. Credit AMNH/D. Finnin Usage Restrictions Can be used with appropriate credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.