FIGURE 6—Three-dimensional (1–3) and 2-D (4, 5) SRXTM reconstructions of two charcoalified fruits with similar external morphology, but different internal structure; 1, surface rendering of Canrightia resinifera (S171508) from the Early Cretaceous Catefica locality, Portugal, showing slightly wrinkled surface of fleshy fruit wall and short hypanthium (arrowhead); dataset acquired using 103 objective and a 20 lm thick LAG:Ce scintillator at 10 keV (voxel size 0.74 lm); 2, surface rendering of Canrightia-like fruit (S174033) from the Early Cretaceous Famalicão locality, Portugal, showing slightly wrinkled surface of fleshy fruit wall and scars from stamens (arrowhead) on the fruit surface; dataset acquired using 203 objective and a 20 lm thick LAG:Ce scintillator at 10 keV (voxel size 0.325 lm); 3, combined surface rendering and cut voltex (transparent rendering) of Canrightia-like fruit (S174105) from the Early Cretaceous Buarcos locality, Portugal, in longitudinal section showing a single, hemi-orthotropous and pendulous seed with chalaza and vascular bundles entering the seed close to apex (arrowhead) and micropyle directed towards the base (arrowhead) and with thick crystalliferous endotesta (green asterisk); dataset acquired using 203 objective and a 20 lm thick LAG:Ce scintillator at 10 keV (voxel size 0.325 lm); 4, transverse orthoslice of Canrightia resinifera (same dataset as for 1) showing fruit wall (arrowhead) enclosing two ovules/seeds with the seed wall composed of crystalliferous and fibrous endotesta (green asterisks) and a thick endotegmen composed mainly of endothelium cells (yellow asterisks); 5, transverse orthoslice of Canrightia-like fruit with collapsed fruit wall (arrowhead) enclosing a single seed (same dataset as for 2); seed wall mainly composed of crystalliferous and fibrous endotesta and with grooves giving the seed surface a pitted appearance; inside are remains of endosperm and embryo. Scale bars for 1–3¼500 lm; for 4, 5¼250 lm.
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