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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 54 μm long, 40 μm wide (diam.), pseudostome 21 ? μm wide, x 640, Omine-numa (pond/marsh), Tsukiyono town, Gunma Pref., Japan, September 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Sphenoderia Sphenoderia Sphenoderia Sphenoderia

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