PeerJ Author 35 Points Contributions by role Preprint Author 35 Contributions by subject area Zoology Anatomy and Physiology Stephen M Kajiura PeerJ Author Summary Marine Biology Zoology Past or current institution affiliations Florida Atlantic University Work details Associate professor Florida Atlantic University Biological Sciences Websites Elasmobranch Research Laboratory PeerJ Contributions Preprints 1 July 25, 2013 - Version: 1 Stiffness without mineral: material properties and biochemical components of jaws and chondrocrania in the Elasmobranchii (sharks, skates, and rays) Marianne E Porter, Jennie L Beltran, Stephen M Kajiura, Thomas J Koob, Adam P Summers https://doi.org/10.7287/peerj.preprints.47v1