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van de Paverd 1995

Plate 58
The 100 ┬Ám scale bar applies to all figures
except fig. 2, which has its own scale bar.

Fig. 1. Tetrapyle indet with a rare, fully developed "extra-cortical" shell. Difference between this form and members of Pylonium is the concentric vs. spiral development. BSS 26B ("Pylonium"-preparate).

Fig. 2. Phorticium indet, broken in order to show inner structure. Note that the spine pointing towards the center (at 10 o'clock) is a foreign element, from another shell. BSS 2813(a).

Fig. 3-6, 8-11. Pylonidae gen. et sp. indet. BSS 19B(F) EF V31, IOW 112(F), BSW 5(F) EF T24, BSS 28B(II), BSS 28B(II/665), BSS 34B(F) EF W36, BSS 28B(IV/509) and IOW 138M.

Fig. 7. Tholospironium cervicorne. BSS 21B(F) EF B28 See also Pl. 54, figs. 1-12.