Nassophorea: Peniculida: Frontoniidae

Ehrenberg, 1838

Frontonia Family: Oral nematodesmata not a ring around mouth, more prominent to side and rear of mouth; typically 3 long, large polykinetids in oral cavity; cytostome expands along postoral suture .
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).

Frontonia, a conjugating pair, x 400, x 640, Aug. 7-13 1999, Vermont-Maine U.S.A., 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

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