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Benson 1966


Plate 20

Figures:
1 Neosemantis distephanus (Haeckel) Popofsky; left latero-dorsal view, VS-R-106b, 1-3cm, D41/1, 300x.

2-7 Amphispyris toxarium Haeckel; 2, right lateral view of sagittal ring, VS-R-27b, 1-3cm, G54/0, 300x; 3, basal view of sagittal ring with incomplete lateral bars, illustrating the "W-shaped" vertical spine structure, VS-R-106b, 1-3cm, D47/1, 300x; 4, apical view, VS-R-81a, 1-3cm, E49/2, 300x; 5, apical view, VS-R-60a, 3-5cm. G5/3, 300x; 6, apical view, VS-R-81a, 1-3cm, C32/0, 300x; 7, basal view, VS-R-71a, 1-3cm, D43/0, 300x.

8-12 Amphispyris subquadrata Haeckel; 8, right lateral view of sagittal ring, VS-R-27b, 1-3cm, E36/0, 300x; 9, right lateral view of sagittal ring with lateral bars partially developed, VS-R-34, 3-6cm, wet slide, specimen lost, 300x; 10, same as figure 9, ventral view, 300x; 11, ventral view, VS-R-46b, 1-3cm, R25/3, 300x; 12, ventral view, VS-R-27b, 1-3cm, T15/0, 300x.

13-14 Amphispyris aff. zonarius (Haeckel); 13, right lateral view of sagittal ring, VS-R-34, 3-6cm, wet slide, specimen lost, 300x; 14, ventral view, lateral bars complete, VS-R-81a, 1-3cm, L18/0, 300x.