Punctured Shells Illuminate Unique Predator-Prey Interactions in Cambrian Oceans

The rapid increase in diversity and abundance of biomineralizing organisms during the Early Cambrian epoch (around 535 million years ago) is often attributed to predation and an evolutionary arms race. A Cambrian arms race is typically discussed on a macroevolutionary scale, particularly in the context of escalation. Despite abundant fossils demonstrating early Cambrian predation, empirical…