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,
lorica 24-27 μm long, 19-21 μm wide,
x 640, Otsuka-ike (pond), Mito city, Ibaraki Pref., Japan, October 2003 by Y. Tsukii
31 μm
63 μm
94 μm; x 640