Lesquereusia sp.
Schlumberger, 1835
Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome at end of
bent neck; test more or less coiled or folded (Illustrated Guide, 1985).
Species:
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Lesquereusia sp. ?,
test 110 μm long, 88 μm wide, L/W=1.3, pseudostome 25 μm wide,
x 640, Sannoh-bori at Sannoh Park, Saitama city, Saitama Pref., Japan, September, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Lesquereusia spiralis (Ehrenberg, 1840):
95-190 μm long,
75-150 μm wide,
50-100 μm deep;
test like flask, neck against body; with secreted imbedded siliceous particles;
pseudostome circular 30-50 μm diam.
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