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Takahashi 1991


Plate 21

Suborder: Spumellaria
Family: Collosphaeridae, Larnacillidae

Figure, Species, Station depth (m), Type of Micrograph, Magnification

1. Didymocyrtis tetrathalamus tetrathalamus (Haeckel) juvenile form, Oblique view of a specimen having only equatorial part. Note that corticalmedullary interconnecting bars lie in the vicinity of an equatorial plane, P1: 4280, SEM, x 550.

2. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Oblique lateral view, P1: 4280, SEM, x 440.

3. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Oblique polar view, P1: 4280, SEM, x 440.

4. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Lateral view, P1: 4280, SEM, x 440.

5. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Polar view of an incompletely developed specimen, P1: 5582, LM, x 210.

6. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Lateral view of an incompletely developed specimen, P1: 5582, LM, x 210.

7. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), PB: 2869, LM, x 210.

8. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), A specimen with well developed outer cortical mesh, PB: 667, LM, x 210.

9. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), P1: 4280, SEM, x 260.

10. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), Oblique polar view, P1: 978, SEM, x 400.

11. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), P1: 5582, SEM, x 220.

12. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), A specimen with well developed polar caps, P1: 5582, SEM, x 215.

13. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), P1: 4280, SEM, x 170.

14. Didymocyrtis tetrathalamus tetrathalamus (Haeckel), P1: 4280, SEM, x 280.

15. Didymocyrtis sp., PB: 2869, LM, x 210.

16. Larnacalpis sp., Frontal view, PB: 2869, LM, x 210.

17. Larnacalpis sp., Lateral view, PB: 2869, LM, x 210.

18. Larnacalpis sp., Frontal view, PB: 3769, SEM, x 170.