570 million years old fossils

The hidden chemical process that saved 570-million-year-old soft animals in sandstone (Image source: NASA) For more than a century, the Ediacara Biota has quietly confused scientists. These fossils, dating back around 570 million years, capture soft, squishy organisms preserved in sandstone, which is something that really shouldn’t happen. Sandstone usually destroys delicate tissues fast, the…