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van de Paverd 1995

Plate 32
The 100 µm scale bar applies to figs. la, 2-4, 7 and 9; the 10 µm scale bar
accompanying fig. 5 also applies to figs. 6 and 8.
Fig. lb has its own scale bar.

Figs. 1, 2. Hexacontium hexacanthum. Fig. la: specimen broken manually to reveal internal structures. Fig. 1b: detail of medullary shells. Fig. 2a: focus on medullary shells, Fig. 2b: focus on cortical shell. BSS 28B(II/692) and IOW 150(F).

Figs. 3, 6. Hexacontid juveniles consisting of two medullary shells and apophyses (incipient cortical shell) on the main spines. Fig. 3: BSS (no sample ID). Fig. 6: BSS 28B(VII/1399).

Figs. 4, 5, 8a,b. Hexacontium hexagonum. BSS 54B(F), 28B(VII/1414), 32B(F) EF F57.

Fig. 7. Hexadendron bipinnatum (first two shells only). BSS 28B(VII/1362).

Fig. 9. Hexacontlum laevigatum. BSS 28B(VII/1361).