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Grammatophora hamulifera is a species of diatoms in the family Grammatophoraceae. They are native to Paraná, Maranhao, Rio Grande Do Sul, Santa Catarina, Pernambuco, Alagoas, and Rio Grande Do Norte. Dead Grammatophora hamulifera 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 12 attributes, including:

Known occurrences, collected specimens and observations of Grammatophora hamulifera Kützing 1844. View this species on GBIF