Figure 2

Specimen labelling and packing: (a) 50 ml Falcon tube with a labelled straw and capsules, (b) a single fossil wrapped in Green’s Lens tissue to minimise movement during image acquisition, (c) loading capsules into the paper straw using a thinner cocktail straw to gently push them down, (d) a packed 50 ml Falcon tube mounted on a glass rod inside the μCT machine; note that the cap-side is facing down (e) the packed tube from above, and (f) the diagram of straw arrangements in (e), noting the position of a larger blue straw and paper used as a divider.