Fig. 2. SEM. Cingulum with two well developed lists: anterior and posterior cingular lists. ACL=anterior cingular list; PCL=posterior cingular list.
Fig. 3. SEM. Right sulcal list visible. C=cingulum; RSL=right sulcal list.
Fig. 4. LM. Hypotheca resembles a sack. Left sulcal list extends half-way down ventral hypothecal margin. Cingulum separates small epitheca from larger hypotheca. Thecal areolae visible.
Fig. 5. LM. This species has high morphological variability: hypothecal width and curvature of the hypothecal margins.
Fig. 6. LM. Another morphological variant; slightly wider antapex than Fig. 3.
Fig. 7. LM. Antapex with a few blunt projections. Deep thecal pores visible.
Fig. 8. LM. Antapex with blunt projections.
Fig. 9. SEM. Antapex with blunt projections. Smooth thecal surface with pores. Megacytic zone void of pores. M=megacytic zone.
Fig. 10. SEM. Smooth thecal surface.
Fig. 11. Line drawing. Morphotype from Stein (1883).
Fig. 12. Line drawing. Morphotype from Stein (1883).
Fig. 13. Line drawing. Morphotype from Stein (1883).
Fig. 14. SEM. Smooth thecal surface with pores.
Fig. 15. SEM. Coarsely areolated thecal surface with pores.
Fig. 16. SEM. Coarsely areolated thecal surface with pores.