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Bicoecida or Bicosoecida:

Bicosoeca or Bicoeca sp.
Bicoeca Stein, 1878
Bicosoeca James-Clark, 1866

Bicoeca Genus: With vase-like lorica; body small, ovoid with rudimentary collar, a flagellum extending through it; protoplasmic body anchored to base by a contractile filament (Kudo, 1966).
Subgenus: sessile, colonial.
Species:

Bicosoeca sp.? or related species ? (Coanoflagellate ?), cell body μm long, μm wide, x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
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