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  1. Radiolaria - Wikipedia

    The Radiolaria, also called Radiozoa and informally called radiolarians, are unicellular eukaryotes of diameter 0.1–0.2 mm that produce intricate mineral skeletons, typically with a central capsule …

  2. Radiolarian | Marine Protists, Plankton, Microscopic | Britannica

    radiolarian, any protozoan of the class Polycystinea (superclass Actinopoda), found in the upper layers of all oceans. Radiolarians, which are mostly spherically symmetrical, are known for their complex …

  3. Introduction to the Radiolaria - University of California Museum of ...

    Radiolaria can range anywhere from 30 microns to 2 mm in diameter. Their skeletons tend to have arm-like extensions that resemble spikes, which are used both to increase surface area for buoyancy and …

  4. Radiolarians: Microscopic Marine Mysteries | AMNH

    Oct 17, 2019 · Radiolarians, single-celled marine organisms with intricate silica skeletons, have existed for at least 550 million years and are found in all the world’s oceans.

  5. Radiolarians Species - Examples, Characteristics, Ecology, Microscopy

    Radiolarians species, members of the subclass Radiolaria, are single-celled eukaryotes commonly found in marine environments (with some being colonial). Although some of the species are …

  6. Radiolaria.org > What are radiolarians

    Radiolarians are part of the marine plankton. They occur in all oceans, including shallow seas, bays, fjords, etc., but almost invariably at salinities above 30 parts per thousand (slightly lower than normal …

  7. Radiolaria - UCL

    Radiolaria are holoplanktonic protozoa and form part of the zooplankton, they are non-motile (except when flagella-bearing reproductive swarmers are produced) but contain buoyancy enhancing …

  8. Radiolarians: What They Are & Why They Matter - Biology Insights

    Radiolarians are ancient, single-celled marine organisms known for their intricate, glassy skeletons. These microscopic wonders have existed for hundreds of millions of years, leaving behind a …

  9. Radiolaria - Geology is the Way

    Radiolarians are single-celled protozoa, measuring less than 0.1 – 0.2 mm in diameter, that produce intricate shells (skeletons) of amorphous silica. They float as part of the zooplankton in the first 200 …

  10. Diversity and ecology of Radiolaria in modern oceans - PMC

    But what exactly are Radiolaria? While the scientific definition has varied through time, and in particular during the last two decades, Radiolaria can be said to be a group of diverse unicellular eukaryotes …