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:
Paulinella chromatophora Lauterborn,
test about 27 μm long, 18 μm wide, pseudostome 3 μm wide,
x 640, drainage ditch, Sanga, Shobu town, Saitama Pref., Japan, Feburary 6, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640