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Radiolaria

Radiolaria A large group of marine sarcodinids (protists), characterized by having a shell with a perforated, membraneous capsule containing the endoplasm, and a siliceous or strontium sulphate skeleton consisting of a lattice shape of variable morphology made up of spicules, bars, and spines. Radiolarians live mainly in surface waters and the earliest forms are Cambrian in age. They are used in the biostratigraphic correlation of oceanic sediments, particularly where calcareous microfossils have been dissolved.

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"Radiolaria." A Dictionary of Earth Sciences. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Radiolaria." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria

"Radiolaria." A Dictionary of Earth Sciences. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria

Radiolaria

Radiolaria (superclass Sarcodina, class Actinopodea) A subclass of protozoa which possess more or less elaborate skeletons of silica. The cell body is generally spherical with axopodia radiating from the periphery. Many species are known. They are chiefly pelagic marine organisms. Fossil radiolarians have been found in Cambrian rocks and they are important stratigraphic fossils for Mesozoic and Cenozoic deep-sea sediments.

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"Radiolaria." A Dictionary of Zoology. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Radiolaria." A Dictionary of Zoology. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria-1

"Radiolaria." A Dictionary of Zoology. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria-1

Radiolaria

Radiolaria A subclass of protozoa (class Actinopodea) which possess more or less elaborate skeletons of silica. Most are pelagic marine organisms. Radiolarian fossils have been found in Cambrian rocks and they are important stratigraphic fossils for Mesozoic and Cenozoic deep-sea sediments. See radiolarian earth and radiolarian ooze.

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"Radiolaria." A Dictionary of Ecology. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Radiolaria." A Dictionary of Ecology. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria-0

"Radiolaria." A Dictionary of Ecology. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/radiolaria-0