Amphidiniopsis (am-fee-din-ee-op-sis) arenaria Hoppenrath 2000. The image shows the left lateral view of a cell, with the cingulum near the anterior end of the cell. On the left side of the image (= ventral cell side) there are two large pusules visible and on the right side (= dorsal cell side) one can see the nucleus. A ventral sulcal spine is visible near the posterior end of the cell on the left.
