The 100 Ám scale bar applies to all figures except fig. 5b,
which has its own (1 Ám) scale bar.
Figs. 1-11. Acanthodesmia reticulata. Fig. 1. Frontal view of sagittal ring + rudimentary arches. Fig. 2: sagittal ring only; lateral view; Fig. 3: main arches developed; connecting bridges lacking. Fig. 4: lateral view of a specimen developed as in fig. 3. Fig. 5a: lateral view of a somewhat more developed specimen, together with an oblique basal view of A. viniculata (see plate 60). Fig. 5b: detail of delicate meshwork draped around (and fused with?) one of the main arches. Figs. 6, 7. Main arches and connecting bridges complete. Fig. 8: lateral view of specimen with complete connecting bridges (as in figs. 6 and 7). Fig. 9: specimen with partially developed finer meshwork. Note the more or less rectangular outline (vs. the rounded outline of figs. 6 and 7). Fig. 11: nearly completely developed specimen (cp. Amphispyris costata Haeckel), also more or less rectangular in outline, but less broad than figs. 9 and 10. IOW 188(F), BSW 7(F), BSS 28B(II), BSS 28B(II), ID unknown, BSS 28B(II), IOW 112(F), BSS 31B(F) EF P34, BSS 2B(II), BSS 26B(F) and BSS 28B(II).