Mosura fentoni belongs to an extinct group of early arthropods. However, Mosura has something that has not been seen in other radiodont. It has an abdomen-like body region made up of several segments ...

Scientists have uncovered a remarkable fossil from Canada's Burgess Shale, a discovery that reshapes how the evolution of arthropods is understood. This new find, named Mosura fentoni, lived roughly ...

The details are astounding," Caron adds. Instead of having arteries and veins like we do, Mosura had an "open" circulatory system, with its heart pumping blood into large internal body cavities called ...