Genus: Pseudostome lacks lobed collar; test round or oval in cross-section;
pseudostome relatively large, with or lacking a collar (Illustrated Guide, 1985).
Species: 70-110 μm long;
55-85 μm diam.;
test oval, round cross-section; brown, chitinoid, with imbedded siliceous plates, attached debris
(Illustrated Guide).
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