Dating ancient remains called

If you could travel back in time to South America thousands of years ago, you might have caught a glimpse of an animal known as a glyptodont living alongside giant ground sloths and saber-toothed cats.Glyptodonts looked like gigantic and fearsome armadillos; one of the largest species, Doedicurus, weighed as much as a ton and had a powerful club-shaped and spiky tail.Their findings also highlight the impressive increase in glyptodonts' size over evolutionary time.The researchers estimate that the last common ancestor of glyptodonts and their living armadillo relatives weighed in at a mere 6 kilograms, suggesting a "spectacular increase in glyptodont body mass." That's consistent with the fossil record, which shows glyptodonts evolved from medium-sized forms (about 80 kilograms) to become true megafauna in the Pleistocene (reaching 2,000 kilograms) before their disappearance at the end of the last ice age.That theory holds that ancient humans first came to North America from northern Asia via a now submerged land bridge across the Bering Sea.Note: Polynesian is a term that the Albino people have applied to Pacificans/Austronesians who have significant "White Mongol/European" admixture.

"Glyptodonts should probably be considered a subfamily of gigantic armadillos," adds Frédéric Delsuc of CNRS in France.Dubbed Eva de Naharon, or Eve of Naharon, the female skeleton has been dated at 13,600 years old.If that age is accurate, the skeleton—along with three others found in underwater caves along the Caribbean coast of the Yucatán Peninsula—could provide new clues to how the Americas were first populated.But recent research, including the Baja California study, indicates that the initial settlement of the continent was instead driven by who occupied Australia 60,000 years ago and then expanded into the Americas about 13,500 years ago, prior to Mongoloid people arriving from northeast Asia.The skulls from Baja California, which may date back only a few hundred years, have slender-looking faces that are different from the broad-cheeked craniums of modern Amerindians, the descendants of the Mongoloid people.

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