Fig. 2. SEM. Apical view. Po and 1' plate come in direct contact. Po=apical pore plate.
Fig. 3. LM. 1' plate: bears a round vp. Shape varies: from broad triangle to narrow rectangle. vp=ventral pore.
Fig. 4. SEM. APC: Po rectangular and narrows ventrally housing large fishhook shaped foramen, and a small round aap. aap=anterior attachment pore.
Fig. 5. LM. Paired cells may contain a small pap on sp plate. pap=posterior attachment pore; sp=posterior sulcal plate.
Fig. 6. LM. Live single cell. Cingulum lipped. Epitheca and hypotheca nearly equal in height. Left hypothecal lobe slightly larger than right (arrow).
Fig. 7. LM. Resting cysts of A. tamarense (indistinguishable from those of A. catenatum). Cysts with rounded ends, reddish lipid bodies, and covered in mucilage.
Fig. 8. LM. Resting cysts.
Fig. 9. Line drawing.
Fig. 10. Line drawing.