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Nassellaria is an order of radiolarians. There are 395 species of Nassellaria, in 176 genera and 15 families. This order has been around since the upper devonian epoch. It includes groups like Trissocyclidae, Theoperidae, and Artostrobiidae. Dead Nassellaria 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 10 attributes, including:

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