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, with endosymbiotic cyanobacteria,
lorica 20 μm long, 15 μm wide,
x 640, Shikinawa-ike (pond, near Kayoicho Park), Kasuya town, Fukuoka Pref., Japan, October 2001 by Y. Tsukii
31 μm
63 μm
94 μm; x 640