Genus: Test circular, ovoid or discoid; pseudostome eccentric, circular or ovoidal;
with or without spines (Kudo, 1966).
Species:
Test 120-150 x 75-100 μm,
60-75 μm in hight,
pouch-shaped in oral view, round in lateral, tapered toward anterior;
pseudostome 25-30 μm with incurved lips;
several similar species (Illustrated Guide, 1985).
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