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radiolarian    
n. 散线虫类的各类动物

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  • Radiolaria - Wikipedia
    Radiolarians are unicellular predatory protists encased in elaborate globular shells (or "capsules"), usually made of silica and pierced with holes Their name comes from the Latin for "radius"
  • 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 and beautifully sculptured, though minute, skeletons, referred to as tests
  • Diversity and ecology of Radiolaria in modern oceans - PMC
    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 (also known as protists) often bearing delicate and elegant mineral skeletons
  • Radiolaria. org
    Radiolaria are holoplanktonic protozoa widely distributed in the oceans They occur throughout the water column from near surface to hundreds of meters depth
  • Introduction to the Radiolaria
    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 to capture prey Most radiolarians are planktonic, and get around by coasting along ocean currents
  • Radiolarian - an overview | ScienceDirect Topics
    Radiolarians, due to their wide-ranging ecology, robust opaline shell chemistry, and high diversity, provide an important record of Quaternary marine environments that complements that provided by other microfossil groups such as diatoms and planktonic foraminifera
  • Radiolarians - Incredible Microplankton | MarineBio Conservation Society
    Radiolarians are single-celled eukaryotic marine organisms known for their intricate mineral skeletons and important ecological and geological roles in the oceans
  • 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 remarkable fossil record
  • 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 meters of water in the Earth’s oceans (photic zone)
  • Radiolaria - New World Encyclopedia
    Radiolaria is a diverse grouping of amoeboid protozoa that produce intricate mineral skeletons, typically with a central capsule of cytoplasm separating the cell into inner and outer cytoplasmic portions, called endoplasm (with nuclei) and ectoplasm (or extracapsulum)





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