A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans

novembre 17, 2020

The Palaeozoic record of chondrichthyans (sharks, rays, chimaeras, extinct relatives) and thus our knowledge of their anatomy and functional morphology is poor because of their predominantly cartilaginous skeletons. Here, we report a previously undescribed symmoriiform…