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van de Paverd 1995


Plate 8
The 100 Ám scale bar applies to fig. 1; the 10 Ám scale bar applies to figs. 2a, 3, 4a, 5-8. Figures 2b and 4b have their own scale bar.

Figs. 1-3. Siphonosphaera circumtexta . Figs. 1, 2: forma circumtexta, both with 'second' shell; fig. 3 forma arktios. BSS 21B(F) EF H24,3; BSS 28B(VIII/1046 and 737).

Figs. 4a,b. Acrosphaera ? labrata. Note smooth, raised rims on all margins. BSS 28B(VIII/1008).

Figs. 5-8. Acrosphaera (?) mercurius. BSS 49B(F) EF Z39; BSS 28B(VIII/956, 1118, 1049).