2026-06-03T23:07:26Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2065584297 2025-04-29T08:10:59.299Z

4.2 EI 10.15151/ESRF-ES-2065584297 Emilie PEDERSEN Emilie Pedersen Isabel BREET Isabel Breet Isabel BREET Isabel Breet Emilie PEDERSEN Emilie Pedersen Kathleen DOLLMAN Kathleen Dollman 0000-0002-5468-4896 Richard DEARDEN Richard Dearden 0000-0003-3522-7304 Richard DEARDEN Richard Dearden 0000-0003-3522-7304 Hannah BYRNE Hannah Byrne 0000-0001-6928-488X Martin RÜCKLIN Martin Rücklin 0000-0002-7254-837X Hannah BYRNE Hannah Byrne 0000-0001-6928-488X Martin RÜCKLIN Martin Rücklin 0000-0002-7254-837X Example Institute 2028 Data from large facility measurement 2025-04-24T06:00:00Z/2025-04-28T06:00:00Z 2025-04-28T06:00:00Z I CC-BY-4.0 Sharks and their relatives (chondrichthyans) have a unique skeleton made entirely of cartilage, unlike other jawed vertebrates. Tessellated calcified cartilage (TCC) provides the skeleton with both flexibility and stiffness, and fossil evidence shows that chondrichthyans developed this innovative tissue in place of bone. Our knowledge of TCC greatly lags behind that of bone and is mainly limited to 2D data. This project will be the first to visualise TCC in 3D in both extinct and extant chondrichthyans using propagation phase-contrast synchrotron microtomography (PPC-SRμCT). Twenty-six specimens will be examined, focusing on the Meckel's cartilage (lower jaw) to observe variations linked to feeding mechanisms. These specimens represent diverse feeding strategies and span 400 million years of evolution. The results will provide new insights into the structure and function of TCC, with implications for evolutionary biology, material science, and medical research on cartilage disorders.