The 500-million-year old shrimps that wore a shield: Beyond the carapace (I)

Around 500-million-years ago, all macroscopic life was still living underwater. Animals were still relatively young, and plants still had tens of millions of years to evolve and claim the land. You have probably heard about this time: the Cambrian period. The Cambrian is probably one most popular paleontological eras without dinosaurs (in fact, almost 300…