Hunan. An extraordinary fossil site dating back 512 million years has been discovered in Hunan Province, a mountainous region in southern China. During excavations conducted in Huayuan County since 2021, scientists unearthed the remains of an entire ancient ecosystem.This discovery is considered highly significant as it dates to the period immediately following the 'Sinsk Event,' considered Earth's first mass extinction. Scientists have named this Cambrian-era site the 'Huayuan Biota,' which is regarded as even more exceptional than Canada's famous Burgess Shale.Han Zheng of the Nanjing Institute of Geology and Palaeontology and his team have analyzed 8,681 fossils so far. Among...