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van de Paverd 1995


Plate 69
The 100 Ám scale bar applies to all figures except 1b and 9
(each of which have their own scale bar).

Figs. la-c. Sethophormis aurelia. BSS 28B(II). Fig. la: apical view; fig. lb: detail of the microperforate cephalic cap; fig. 1c: oblique lateral view, showing height of the cone.

Figs. 2, 3. Sethoconus gegenbauri. BSS 28B(II) and BSS 30B(F) EF L33.

Figs. 4-8. Sethoconus tricostatus. Figs. 4 and 5: oblique apical views of specimens with well-developed thorax. Fig. 6: apical view of specimen with rudimentary thorax. Figs. 7 and 8: lateral views. Note double apical spine in fig. 8. BSS 28B(II); BSS 15B(F) EF E22; IOW 188(F); BSS 32B(F) EF P55 and BSS 58(F).

Fig. 9. Sethoconus cervus. oblique basal view showing curvature and partial closure of thoracic segment. Note difference in magnification with respect to the other figures. 28B(III/454).