 
 
|  Genus: 
Test small ovoid in shape with siliceous scales in alternating transverse rows; pseudostome terminal; 
cell body does not fill the test completely; nucleus posterior (Kudo, 1966). Species: | 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
Paulinella chromatophora Lauterborn, 
cell body  μm long,  μm wide, 
x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
