The Burgess Shale in British Columbia, Canada, preserves numerous fossils that document the evolution of life on Earth. Among them is Habelia optata, a 508-million-year-old relative of early chelicerates. This armoured predator had five pairs of […]
A microscopic fossil discovered in China was initially interpreted as a possible early relative of humans. The aquatic animal resembled a rounded sac covered by a thin outer layer. Understanding the evolutionary origins of humans remains a recurring scientific question. […]
