2003
DOI: 10.1590/s1519-69842003000300007
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Abstract: A study of the diatoms Eupodiscus radiatus Bailey and Fryxelliella floridana Prasad, mainly focussing on the mantle and cingulum, provided new morphological information. In E. radiatus dendritic structures and two types of a palisade-like structure fixed to silica rings were found on the lower valve mantle. Cingulum presented 1-3 bands with areolae arranged in decussate rows. Furthermore, the pars interior of the valvocopula is fimbriate; and the external openings of the rimoportulae are located along the rim … Show more

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Cited by 4 publications
(10 citation statements)
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“…Detailed observations using LM and SEM identified those characters unique for Fryxelliella : the ‘circumferential marginal tube’ (siphon marginalis), the external subcircular or subtriangular apertures at the valve margins (Prasad et al . 1997), and the ‘juxtaposed quadrangular plates’ in the valve mantle (Fernandes 2003). These characters seen by LM as two different marginal rings: one hyaline and the other a ring of pores.…”
Section: Discussionmentioning
confidence: 99%
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“…Detailed observations using LM and SEM identified those characters unique for Fryxelliella : the ‘circumferential marginal tube’ (siphon marginalis), the external subcircular or subtriangular apertures at the valve margins (Prasad et al . 1997), and the ‘juxtaposed quadrangular plates’ in the valve mantle (Fernandes 2003). These characters seen by LM as two different marginal rings: one hyaline and the other a ring of pores.…”
Section: Discussionmentioning
confidence: 99%
“…The recently described terms used for the special features of Fryxelliella follow Prasad et al . (1997) and Fernandes (2003).…”
Section: Methodsmentioning
confidence: 98%
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