Fig. 2. SEM. Single cell: dorsal view. Reduced apical horn and apical spine. Numerous large pores scattered on thecal surface. AH=apical horn; AS=apical spine.
Fig. 3. SEM. Hypotheca: antapical view. Postcingular plates, ridges on plate sutures, and short antapical spines. Cingulum with strong lists. APS=antapical spines.
Fig. 4. SEM. Epitheca: oblique apical view. Cingular lists and apical pore complex. Plate 1' does not come in contact with APC. APC=apical pore complex; C=cingulum.
Fig. 5. SEM. Close up of APC: plates Po and cp with anterior attachment pore. AP=anterior attachment pore.
Fig. 6. SEM. Ventral view: close up of cingular lists and sulcus. S=sulcus.
Fig. 7. Line drawing. Epitheca.
Fig. 8. Line drawing. Hypotheca. S.p.=sulcal plate.
Fig. 9. LM. Spiny cyst.