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meaning: "Giant claw"
Named By: Richard Harlan in 1825
Time Period: late Miocene to Pleistocene, 10.3-0.011 Ma
Location: Across North and Central America
Size: Up to 3 meters long
Diet: Herbivore, possibly omnivorous
Fossil(s): Many specimens
Classification: | Chordata | Mammalia | Xenarthra | Pilosa | Megalonychidae |

Megalonyx (Greek, "large claw") is an extinct 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 Mya--11,000 years ago, existing for approximately 10.289 million years. Type species, M. jeffersonii, measured about 3 m (9.8 ft) and weighed up to 1,000 kilograms.

Read more about Megalonyx at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra