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Oligohymenophorea (formerly Nassophorea): Peniculida: Frontoniidae

 Frontonia vernalis
Ehrenberg, 1833

Frontonia vernalis 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:
Other endosymbioses

Frontonia vernalis (or F. leucas var. ?), with endosymbiotic Chlorella, cell body 325 μm long, μm wide, x 100, x 200, x 400, 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 vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis
x 100, x 200, x 400, x 640
Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis
x 400
Frontonia vernalis Frontonia vernalis Frontonia vernalis

Frontonia vernalis, trichocysts 10.5 μm long, 1.5 μm wide, x 100, x 200, x 400, x 640, August 7-13, 1999, Vermont-Maine U.S.A., by Y. Tsukii
Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis
Azure C staining, x 100, x 200, x 400, x 640
Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis
Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis
Frontonia vernalis Frontonia vernalis

A cell flattened under cover glass to visualize radial canals
Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis Frontonia vernalis

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