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Coscinodiscus wailesii. oblique SEM . Visible are: girdle bands, two regular rows of rimoportulae (2-3 areolae from margin & at valve face/mantle junction), one irregular row of rimoportulae near center, irregular hyaline central area. scale bar is 10µm.
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Coscinodiscus wailesii,schematic girdle view of one theca (modified from Gran & Angst, Fig. 26)
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Coscinodiscus wailesii, cleaned valve, light microscope
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Coscinodiscus wailesii, living cell in valve view
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R. setigera: valve apex, transitional to var. pungens
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R. setigera: valve apex of var. setigera (SEM)
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R. setigera: individual girdle band (TEM)
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R. setigera: girdle bands in two dorsiventral columns
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R. setigera: one spine typical of var. setigera; other spine transitional to var. pungens
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R. setigera fully-formed resting spore pair in parent cell
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R. setigera bloom: var setigera + var. pungens; diameters 6-9µm