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According to their analysis – using a technique called Optically Stimulated Luminescence (OSL) to date the ancient stone – the jars were positioned potentially as early as the late second millennium BCE.Evidence discovered of varied mortuary practices at some of the sites – including primary burial of human skeletons, and also bundled or jarred collections of bones – was also dated by radiocarbon dating, suggesting activity between 9-13th century CE.On the face of the most recent evidence, this means the Plain of Jars pre-dates the most recent and confirmed discoveries of mortuary practices, by potentially thousands of years. As for...

In the lowest layer of the Area 15 archaeological grounds at the Gault Site in Central Texas, researchers have unearthed a projectile point technology never previously seen in North America, which they date to be at least 16,000 years old, or a time before Clovis. While clear evidence for the timing of the peopling of the Americas remains elusive, these findings suggest humans occupied North America prior to Clovis - considered one of the oldest, if not the oldest, Paleo-Indian culture of North America, and dated to around 11,000 years ago. In 2002, Area 15 of the Gault Site in...