A can of worms-tracing the origins of Ecdysozoa using fossils, molecules and morphology in a Bayesian framework

Ecdysozoans comprise some of the most successful invertebrate phyla, such as the arthropods and nematodes. However, other members of the group are less abundant today than they used to be. An amazing fossil record with a focus on newly collected material from the Early Cambrian Sirius Passet may provide means to better understand the nature of the…