One of several Jianfengia fossil specimens: The animal's body plan is extremely simple, consisting of numerous identical segments. However, its head is like that of a more modern crustacean, with eyes ...

Decapod crustaceans represent one of the most diverse and ecologically significant groups of marine and freshwater organisms. Their evolutionary history, documented by an abundant fossil record, ...

A tiny fossil of a sea creature that lived more than half a billion years ago sheds new light on the evolution of arthropods, the most species-rich and successful group of animals to inhabit Earth, ...