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Filosea: Gromiida

 Sphenoderia lenta
Schlumberger, 1845

Sphenoderia Genus: Test more or less compressed; pseudostome elliptical on end of a clear collar (Illustrated Guide, 1985).
Species: Test clear, elliptical, 30-60 μm long, 20-50 μm diam.; collar height 8-10 μm; scales overlapping, elliptical; pseudostome oval slit, 10-22 μm wide; nucleus spherical 20-25 μm; endosome 4-5 μm (Illustrated Guide, 1985).

Sphenoderia lenta Schlumberger ?, test 55 μm long, 47 μm wide, pseudostome ?? μm wide, x 640, Kido-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 1, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Sphenoderia Sphenoderia Sphenoderia

Images of collecting locality: Kido-ike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 1, 2006 by Y. Tsukii

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