Asteromphalus flabellatus is a species of diatoms in the family Asterolampraceae. They are native to SãO Paulo, Paraná, Rio Grande Do Sul, and Rio De Janeiro. Dead Asteromphalus flabellatus form siliceous oozes.

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  • 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 Asteromphalus flabellatus (Brébisson) Greville 1859. View this species on GBIF