|  Genus: Ovoid or subspherical; with two flagella and radiating axopodia, all arising from an 
eccentric centriole; nucleus eccentric; pseudopods sometimes withdrawn; fresh water (Kudo, 1966). Species: 
Spherical cell body (heliozoan type) 15-22 μm in diam. (Page & Siemensma, 1991).
 
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