Each figure has its own scale bar.
Figs. 1-3, 5. Cladococcus abietinus, showing slight morphological variation with respect to shell thickness and pore size. Fig. 5 has somewhat smaller pores and a thicker shell. Spine radius and blade width vary considerably throughout the spine, depending on where the cross-section is taken (compare broken spines in fig. 3 with that of fig. 4). BSS 28B(IX/1321, 1310, 1320 and 1332).
Fig. 4. Spongosphaera polyacantha forma polyacantha.BSS 28B(IX/1304).