Genus: Free-living; skeleton with or without coat; cuirass made of scales and of the basal part
of the spicules; coat indistinguishable (Illustrated Guide, 1985).
Siliceous scales arranged tangentially and radiating siliceous spines with pointed or
bifurcated ends; (Kudo, 1966).
Species: Body contains zoochlorellae; long & short glassy spicules (How to know the protozoa, 1979).
Acanthocystis turfacea Carter ?,
cell body 42 μm long 38 μm wide, axopodia up to μm long,
siliceous spines with bifurcated ends 5-25 μm long,
x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
31 μm 63 μm 94 μm; x 640