Megatheriidae
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Megatheriidae is a family of extinct ground sloths that lived from approximately 23 mya—11,000 years ago.
Megatheriidae
Closeup of hand, showing claws
Closeup of skull
Ground sloth
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Ground sloths are a diverse group of extinct sloths in the mammalian superorder Xenarthra. Ground sloths varied widely in size, with the largest, belonging to genera Megatherium and Eremotherium, being around the size of elephants. Ground sloths are a paraphyletic group, as living tree sloths are thought to have evolved from ground sloth ancestors.
Ground sloth
Fossil Eremotherium skeleton, National Museum of Natural History, Washington, DC.
Paramylodon harlani, Texas Memorial Museum, University of Texas at Austin
A Tamandua anteater in an upright defensive stance similar to those presumed to have been adopted by ground sloths, per trackways preserved in New Mexico