Pleurosigma normanii is a species of diatoms in the family Pleurosigmataceae. It is native to Rio Grande do Norte, Santa Catarina, Pernambuco, Rio Grande do Sul, Rio de Janeiro, and São Paulo. Pleurosigma normanii form siliceous oozes.

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  • URI: http://purl.obolibrary.org/obo/ENVO_02000044
  • Definition: Siliceous ooze is a marine sediment composed of the debris of plankton with silica shells, such as diatoms and radiolaria. This ooze is limited to areas with high biological productivity, such as the polar oceans, and upwelling zones near the equator. The least common type of sediment, it covers only 15% of the ocean floor. It accumulates at a slower rate than calcareous ooze: 0.2-1 cm / 1000 yr.
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EOL has data for 23 attributes, including:

Known occurrences, collected specimens and observations of Pleurosigma normanii Ralfs 1861. View this species on GBIF