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Table 7

Weight percent (WT%) for three major elements* in cross section cuts of the anterior hook and the posterior hook of Neoechinorhynchus ponticus n. sp.

Anterior hook
Posterior hook
Base (A)
Entry (B)
Tip (C)
Base (A)
Entry (B)
Tip (C)
Phosphorus (P) 18.18 4.15 13.12 ** 17.47 13.36 1.77
Calcium (Ca) 47.61 65.20 26.39 4.48 39.65 36.42
Sulfur (S) 2.99 1.0 6.22 36.42 3.60 4.48

Pd (palladium) and Au (gold) were used to count the specimens. Ga (gallium) was used for the cross cut of the hooks; other elements (C, O, N) are common in organic matter.


See Figure 39 for EDXA spectrum of bolded WT% of tip of anterior hook of N. ponticus from the Black Sea. Inset: anterior hooks. Note that sulfur is much higher (36.42%) at the base of the posterior hook, calcium is highest (65.20%) at the entry of the anterior hook, and phosphorous is slightly higher (18.18%) at the base of the anterior hook.

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