Genus: Test round or oval in cross-section; pseudostome terminal with dentate scales. Species: Test elongate-oviform with hemispherical crown, not compressed, 45-100 μm long, 24-50 μm wide; pseudostome circular, 10-20 μm diam.; body scales circular to broadly oval in shape, 8-12 in each row, 10-16 μm long (Cash & Wailes, 1915).

μm wide, P/W=, scales 12 μm long, 6 μm wide, L/W=2.0, x 640, Nidanuma (Nitanuma), Tsuchiyu-onsen, Fukushima city, Fukushima Pref., Japan, October 28, 2005 by Y. Tsukii
31 μm 63 μm 94 μm; x 640

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