New anatomical features of radiodont oral cones from the Fezouata Biota (Early Ordovician, Morocco)

Radiodont mouthparts (oral cones) are rare in the fossil record compared to the frontal appendages and cephalic carapaces of these iconic early Palaeozoic animals. Therefore, the study of oral cones has primarily been based on their associations with other body parts, from both taxonomic and ecologi