Cycleryon

Cycleryon is an extinct genus of crab belonging to the family Cycleryonidae. These crustaceans lived during the Jurassic and Cretaceous periods. They are characterized by their distinctive, almost circular carapace (shell), from which the genus name is derived. Fossils of Cycleryon species have been found in various locations across Europe.

Cycleryon is considered an important genus for understanding the evolutionary history of crabs and the development of their body plans. The morphology of Cycleryon species suggests that they may have occupied a variety of ecological niches in the ancient marine environments they inhabited. Specific details about their diet and behavior remain largely speculative due to the limitations of fossil evidence. However, their morphology allows paleontologists to infer that they were likely bottom-dwelling scavengers or predators. Further research and discovery of new fossil specimens may provide more comprehensive insights into the life and ecology of Cycleryon.