Temporal range: Late Miocene – Pleistocene
|An artist's illustration of Megalonyx jeffersonii|
| †Megalonyx jeffersonii|
Megalonyx (meaning "large claw"), also known as the Jefferson's ground sloth, was a genus of ground sloths of the family Megalonychidae endemic to North America from the Hemphillian of the Late Miocene through to the Rancholabrean of the Pleistocene, living from ~10.3 million years ago — 11,000 years ago, existing for approximately 10.289 million years. Type species, Megalonyx jeffersonii, measured about 3 m (9.8 ft) and weighed up to 1,000 kilograms.
In popular culture
- Megalonyx appeared in the documentary Before We Ruled The Earth.