Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome relatively large, with or lacking a collar (Illustrated Guide, 1985).
Species: 70-150 μm long; 50-130 μm diam.; test like D. lobostoma but of clear tubercules with imbedded quartz granules; pseudostome polygonal, not lobed, 20-50 μm diam., on short collar (Illustrated Guide, 1985).
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D. tuberculata
169 x 131 μm
L/W=1.3
Japan, 199?
D. tuberculata ?
95 x μm
L/W=
Kejo-numa
Furukawa
Miyagi, 2003
