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Nassophorea: Peniculida: Frontoniina: Frontoniidae
Frontonia depressa
(Stokes, 1886)
Frontonia parvula Penard, 1922
Genus: Postoral kineties usually to left of oral poykinetids (Illustrated Guide, 1985).
Left edge is more curved than right edge; cytopharynx with numerous strong fibrils; ectoplasm with
numerous fusiform trichocysts; macronucleus oval; one to several micronulei (Kudo, 1966).
Species:
Cell body 60-80 μm long; macronucleus short sausage-shaped; a single micronucleus; a single contractile vacuole
(Kahl, 1930).
Frontonia depressa,
cell body 72 μm long, 36 μm wide,
a single macronucleus anterior, two contractile vacuole central and just behind equator,
x 100, x 200, x 400, x 640, Japan, November 1998, by Y. Tsukii
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