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Heliozoea: Centrohelida

Acanthocystis turfacea
Carter, 1863

Acanthocystis turfacea 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 μm long, μm wide, L/W=, x 640, a drainage ditch along northern side of Akaiyachi-shoya-shokubutu-gunraku (Akai wetland), Aizuwakamatsu city, Fukushima Pref., Japan, May 4, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Acanthocystis turfacea Acanthocystis turfacea Acanthocystis turfacea

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