Specimen embedded in block and volume rendering. A. Anterior part of block, anterior (upwards) specimen used for study. B. Photograph of specimen in block. C. Block trimmed and anterior portion detached, after microCT scan. D–G. Volume rendering with Drishti software. D. Transfer functions set to view embedding resin, facing bottom of block. E, F. Different transfer function settings. G. Several independent transfer function setting optimized for specific specimen structures with clipping part of the transfer function results. f, foot; g, gill; gv, gill vessels; mu, muscle; ol, oral lappets; sr, shell resilium.