The vertical 100 Ám scale bar applies to figs. 1 and 3a; the horizontal 100 Ám scale bar applies to figs. 2, 4 and 5a; figs. 3b and 5b have their own (10 Ám) scale bar.
Figs. 1, 2, 4. Carposphaera angulata. Fig. 1: forma pectinata. Fig. 2: individual with intermediate characteristics between forma pectinata and forma angulata. Fig. 4: forma angulata. BSS 28B(IX/1189, 1252) and unknown sample from BSS.
Fig. 3. Carposphaera elysia. Fig. 3b: Detail of the cortical shell, in which internal "sandwich" layering has been made visible by dissolution. BSS 28B(IX/1297). See also Pl. 17 fig. 1.
Figs. 5a,b. Carposphaera ? mellitosphaera, with detail of the double cortical shell in fig. 5b. BSS 28B(IX/1318).