Micro-CT scan of Protasterina flexuosa (CMC 25001) using a Nikon XTek XT H225 scanner (Tokyo, Japan). 3200 two-dimensional images were generated with a voxel size of 6.0 microns at a voltage of 85 kV and current of 90 microamps. Volume was reconstructed using Nikon CTPro 3D (Tokyo, Japan). Users should contact authors prior to file use other than corroborating data presented in paper
