Light (A) and scanning electron (B-I) micrographs of Euglypha rotunda. (A) View of live specimen showing numerous thin and long filopodia. (B-E) Broad lateral view of four specimens to show uniformity of shell shape and symmetrical arrangement of shell plates. (F-G) Apertural views to illustrate shape and arrangement of apertural plates. (H) Close up view of apertural plates. (I) Detail of shell surface to show overlapping shell plates.