Family (Wallich, 1864): Scales round to elliptical, thin.
Genus (Deflandre, 1928): Test round or oval in cross-section; pseudostome with clear crenulate rim (Illustrated Guide, 1985).
Species: 25-60 μm long; 15-40 μm diam.; test clear, elliptical, round cross-section; with round, overlapping scales; no spines; pseudostome terminal, 8-12 μm; on short, dentate collar (Illustrated Guide, 1985).

->> Description at WPRNO

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T. dentata 50 x 26 μm 47 x 23 μm Numa-no-hara m. Madarao highland Niigata, 2005	T. dentata 55 x 25 μm Hakama marsh Madarao highland Niigata, 2005	T. dentata 58 x 26 μm Shibayachi m.5 Odate Akita, 2007	T. dentata 50 x 21 μm Kaga-city c.p. Kaga Ishikawa, 2007
T. dentata 50 x 25 μm Nozomiko 2 Madarao highland Nagano, 2007	T. dentata 50 x 25 μm Japan, 1998	T. dentata 45 x 24 μm Japan, 1998
T. dentata 45 x 26 μm Shishizuka Tsuchiura Ibaraki, 2003	T. dentata 42 x 24 μm near Yamaguchi Univ. Yamaguchi, 2004	T. dentata ? 40 x 20.5 μm Niigata, 2001	T. dentata 45 x 22 μm Kamonoyachi-numa Zao onsen Yamagata, 2005
T. dentata 47 x 24 μm Iyari marsh Omachi Nagano, 2006	T. dentata 55 x 26 μm Maimeno-ike Norikura highland Nagano, 2006	T. dentata 49 x 24 μm Iroha-numa 2 Zao mountain Yamagata, 2006	Tracheleuglypha ? 53 x 25 μm Akebono marsh Tsuchiyu-onsen Fukushima, 2005
T. dentata 46 x 23 μm Hazama marsh Ashikaga Tochigi, 2006

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