Helically arranged cross struts in azhdarchid pterosaur cervical vertebrae and their biomechanical implications Williams, Cariad J. ; Pani, Martino ; Bucchi, Andrea ; Smith, Roy E. ; Kao, Alexander ; Keeble, William ; Ibrahim, Nizar ; Martill, David M. Abstract Publication: iScience Pub Date: April 2021 DOI: 10.1016/j.isci.2021.102338 Bibcode: 2021iSci...24j2338W