Genus: Colonial; cells arranged pyramidately, each bearing spiny projections.
Species:
Errerella sp.,
colony pyramidal in shape, 20 μm wide,
cell body spherical, 5 μm in diam.,
spines up to 27 μm long,
x 400, x 640, Tega-numa, Abiko city, Chiba Pref., Japan, October 2000 by Y. Tsukii
50 μm
100 μm
150 μm; x 400