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radiolarian    
n. 散线虫类的各类动物

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  • 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 dividing the cell into the inner and outer portions of endoplasm and ectoplasm The elaborate mineral skeleton is usually made of silica [1] They are found as zooplankton throughout the global
  • 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 Usually composed of
  • 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
  • Introduction to the Radiolaria
    Introduction to the Radiolaria With their glassy skeletons of often perfect geometric form and symmetry, radiolarians are among the most beautiful of all protists They are also an ancient group, going back all the way to the early Cambrian Period Their abundance in many rocks, their long geologic history, and their diversity through time make them important sources of information on the
  • Diversity and ecology of Radiolaria in modern oceans - PMC
    Summary Among the many inhabitants of planktonic communities, several lineages have biomineralized intricate skeletons These have existed for millions of years and include the Radiolaria, a group of marine protists, many of which bear delicate mineral skeletons of different natures Radiolaria are well known for their paleontological signatures, but little is known about the ecology of modern
  • Radiolarians: What They Are Why They Matter - Biology Insights
    Explore radiolarians, ancient microscopic organisms whose intricate forms offer profound insights into marine ecosystems and Earth’s geological history
  • Radiolaria. org
    Radiolaria org Radiolaria org is an online database containing information about radiolarians - fossil and recent, with images, descriptions, references, synonyms and links to other online resources more What are Radiolarians Radiolaria are holoplanktonic protozoa widely distributed in the oceans They occur throughout the water column from near surface to hundreds of meters depth As with
  • Radiolaria - Geology is the Way
    A fossil of radiolarian observed at the Scanning Electron Microscope Photo by ZEISS Microscopy 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) They are mostly heterotrophic but
  • Radiolarian - an overview | ScienceDirect Topics
    Radiolarian Polycystinea consists of four extant orders (Collodaria, Entactinaria, Nassellaria and Spumellaria) and three extinct orders (Albaillellaria, Archaeospicularia, Latentifistularia) The Polycystinea are among the oldest heterotrophic planktonic microfossils known in the fossil record
  • Radiolaria - UCL
    This teaching and learning web-site is intended as an introduction to micropalaeontology Micropalaeontology is the study of microfossils (any fossil generally less than 1mm in size) This page covers radiolaria





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