Family: Scales round to elliptical, thin.
Genus: Test round or oval in cross-section; pseudostome terminal with dentate scales (Illustrated Guide, 1985).
Species: Test 55-70 μm long; cross-section at greatest breadth, 25-35 μm by 12-20 μm; test long oval, cross section elliptical; body scales long ellipses; spines along lateral border, between scales, many bifurcate, 12-25 μm long; pseudostome with finely dentate border (Illustrated Guide, 1985).

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E. filifera 90 x 45 μm Test; L/W=2.0 s, μm Scale; L/W= Tashirodaira m. Hakkoda mountain Aomori, 2005	E. filifera 69 x 38 μm Test; L/W=1.8 s, μm Scale; L/W= Japan, 1998	E. filifera 63,65 x μm Test; L/W=1.5-1.7 s, μm Scale; L/W= Hiroshima, 1998 Movies	E. filifera 68 x 42 μm Test; L/W=1.6 s, μm Scale; L/W= Kejo-numa Furukawa Miyagi, 2003
E. filifera 60 x 35 μm Test; L/W=1.7 s, μm Scale; L/W= Tane-ike Togakushi highland Nagano, 2005	E. filifera 54 x 24 μm Test; L/W=2.3 s, μm Scale; L/W= Tane-ike Togakushi highland Nagano, 2006	E. filifera 65 x 26 μm Test; L/W= s, μm Scale; L/W= Sukawa highland Kurikoma mt. Iwate, 2007	E. filifera 60 x 28 μm Test; L/W= s, μm Scale; L/W= Komado marsh 6 Showa & Tajima Fukushima, 2007

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