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rimoportula. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Noun
rimoportula (plural rimoportulae)
- A lip-shaped structure in some diatoms
2015 October 15, “New Insights into Plagiogrammaceae (Bacillariophyta) Based on Multigene Phylogenies and Morphological Characteristics with the Description of a New Genus and Three New Species”, in PLOS ONE, →DOI:Many araphid diatoms have parallel striae and a distinct sternum; many araphid diatoms (and even some centric diatoms, particularly in the Biddulphiaceae and Eupodiscaceae) have apical pore fields; other small araphid pennates (such as Staurosira species) and centrics (Corethron and Leptocylindrus) lack rimoportula; and occluded pores are found in most diatoms, albeit in a variety of siliceous structures.