Cambrian “Huayuan biota” fossils in China reveal a thriving deep-sea world after Earth’s first animal die-off
WASHINGTON, Jan 28, 2026, 14:15 EST In southern China, scientists have unearthed a trove of marine fossils dating back 512 million years, revealing a thriving deep-water ecosystem shortly after the first major animal extinction. Paleontologist Han Zeng described the Huayuan biota as