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Figure 8

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Energy Dispersive X-Ray spectrum of a Gallium cut hook tip of a Heterosentis holospinus specimen showing high levels of sulfur similar to those of the hook edge at mid-cut (Table 2). The X-ray data are the elemental analysis of the hook tip (see bolded figures in Table 2). Insert: SEM of a whole proboscis and cross sections near the hook tip of Gallium cut hooks showing the thick, high-sulfur hook edge.

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