120-Million-Year-Old Fossil Reveals Ancient Origin of Marsupials
A newly identified deltatheroidan mammal discovered in China’s Liaoning province establishes a 120-million-year-old fossil baseline for marsupials. Paleontologists at the Chinese Academy of Sciences named the species Archetheridium sinense, positioning it as the oldest confirmed metatherian ancestor recovered to date. Fossil Discovery in the Jiufotang Formation Unearthed at Dasanjia village, the partial skeleton of Archetheridium … Read more