The “egg” was mostly hidden in the mud, and so Nievas wasn’t sure at first just how big it was. But as he dug around the strange object, he soon realized that it was huge – far too big for any dinosaur egg. Indeed, measuring 3 feet wide, what he had found was no egg at all.
That said, what Nievas had uncovered was still a shell of sorts – just not one meant for hatching out of. In fact, it was the armor of a long dead mammal that lived way back, around 10,000 years ago.
Yes, the armor belonged to a genus of armadillo family ancestors called Glyptodon, which originally roamed the forests of the South American continent during the Pleistocene epoch. Fossils indicate that the animal looked like a flattened out version of a Volkswagen Beetle and weighed just as much as said vehicle.