Researchers identified the fossil as Glyptodon reticulatus, a megafauna species from the Late Pleistocene epoch.

Now, thanks to some well-preserved shells from two South American species, we know that Glyptodon had an extra fringe of spines along the margins of its carapace.

Killing a glyptodont was no easy task. Prehistoric, bad-ass cousins of modern armadillos, these large mammals were protected by bony shielding on almost every part of their body. Some, such as ...

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Student discovers 11,700-year-old remains of mega mammal Glyptodon in Argentina's Córdoba River Researchers identified the fossil as Glyptodon reticulatus, a megafauna species from the Late ...