Family: Test usually more or less compressed; pseudostome narrowly oval or slit-like.
Genus:
(Illustrated Guide 2nd).
Species:
(Illustrated Guide 2nd).
Porosia bigibbosa (Archer 1867) Leidy,
test 250 μm long, 160 μm wide, L/W=1.6,
pseudostome 60 μm wide,
x 200, x 400, x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
x 640
Family: Test usually more or less compressed; pseudostome narrowly oval or slit-like.
31 μm
