 
 
|  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
 
 
 
 
Images of collecting locality: 
Banpaku memorial park, Tsukuba city, Ibaraki Pref., Japan, January 24, 2006 by Y. Tsukii
 
 
