Plate 3
1-4. Antarctissa denticulata (1, 2, 4) DSDP 28-266-1, CC; (3) DSDP 29-278-8-2, 10-12 cm. 5. Transitional specimen between A. denticulata and A. robusta DSDP 29-278-8-4, 0-2 cm. 6, 7. Antarctissa robusta DSDP 29-278-8-6, 0-2 cm. 8-12. Antarctissa cylindrica. 8. DSDP 29-278-8-4, 0-2 cm. 9. DSDP 29-278-8-2, 10-12 cm. 10. Diagrammatic illustration of internal ring structure (lattice-wall not shown) in oblique view, looking upwards. 11. Sample 113-689B-2H-1, 52-54 cm. 12. DSDP 29-278-8-2, 10-12 cm. View looking upwards from base of thorax into shell. 13-15. Antarctissa strelkovi. (13) 113-689B-2H-1,52-54 cm; (14) Sample 113-689B-5H-3,56 cm; (15) Islas Orcadas Piston Core 1176-71, 0-1 cm. 16, 17. Transitional specimens between A. strelkovi and Antarctissa deflandrei. DSDP 29-278-8-4, 0-2 cm. 18, 19. Antarctissa deflandrei n. comb. Sample 113-689B-5H-3,56 cm. |
