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 30 μm long, 23μm wide, L/W=1.3, pseudostome μm wide,
x 640, Futayo-no-ike (pond) near Haguro mountain, Haguro town, Yamagata Pref., Japan, July 10, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640