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Biddulphia biddulphiana is a species of diatoms in the family Biddulphiaceae. They are native to Pernambuco, Rio Grande Do Norte, Alagoas, Rio Grande Do Sul, Paraná, Santa Catarina, Rio De Janeiro, Espirito Santo, and SãO Paulo. Dead Biddulphia biddulphiana 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 13 attributes, including:

Known occurrences, collected specimens and observations of Biddulphia biddulphiana. View this species on GBIF