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Oligohymenophorea (formerly Nassophorea): Peniculida: Frontoniidae

Frontonia marina
Farre-Dom., 1891
Syn: F. leucas var. marina Florentin, 1899

Frontonia marina 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 150-600 μm long; posterior end slightly pointed; two ovoidal micronuclei; a single contractile vacuole (Kahl, 1930).


Frontonia marina or F. marina ?, a conjugating pair, cell body 194 μm long, μm wide, x 400, x 640, Vermont-Maine U.S.A., August 7-13, 1999, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Frontonia marina Frontonia marina Frontonia marina
Frontonia marina Frontonia marina Frontonia marina
Frontonia marina Frontonia marina Frontonia marina Frontonia marina


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