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Polycystinea (Polycystines) is a class of radiolarians. There are 931 species of Polycystines, in 303 genera and 37 families. This class has been around since the cambrian stage 4 age. It includes groups like Quinquecapsulariidae. Dead Polycystines form siliceous oozes. They are omnivores. They are passively mobile organisms.

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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 21 attributes, including: