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Figures 41–43


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X-ray panels of elemental scans of Profilicollis altmani cystacanth hooks. See Table 4 for % weight of depicted elements. 41. Scan of hook tip. Note the highest level of sulfur compared to the lower levels of phosphorous, magnesium, and calcium. Inset: hook tip. 42. Scan of edge of mid-hook. Note the highest level of calcium and the moderate levels of sulfur and phosphorous. Insert: hook edge. 43. Scan of center of mid-hook. Note the highest level of calcium and the lowest level of sulfur and magnesium. Insert: the center of a mid-hook. Center base of a longitudinal gallium cut showing typical levels of phosphorus, calcium and sulfur content. Insert: SEM of a longitudinal gallium cut hook.

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