radiolaria การใช้

• The relationship between the Foraminifera and Radiolaria is also debated.
• Biogenic silica occurs in the structure of diatoms, radiolaria and siliceous sponges.
• Note that not all tests are calcareous; diatoms and radiolaria have siliceous tests.
• Famintsyn discovered the symbiosis of algae with radiolarias and developed a theory of symbiogenesis.
• Minute pelagic species in the phyla Foraminifera and Radiolaria also produce ornate calcareous skeletons.
• Diatoms, radiolaria and siliceous sponges use biogenic silica as a structural material for skeletons.
• The "'Matanuska Formation "'consists of more than of radiolaria.
• The hard red Franciscan chert is sedimentary in origin and rich in microscopic radiolaria fossils and seashells.
• The term " Radiozoa " has been used to refer to radiolaria when Phaeodarea is explicitly excluded.
• Radiolaria grow their intricately beautiful patterned skeleton around their soft core in defiance of normal biological process.
• But whether they are sister lineages or if the Foraminifera should be included within the Radiolaria is not known.
• However, various sea sponges and microorganisms, such as diatoms and radiolaria, secrete skeletal structures made of silica.
• The oil comes from an accumulation of radiolaria that died and fell on to the seabed in the absence of oxygen, he explained.
• Likewise, some holoplanktonic protozoa ( Radiolaria ), some sponges, and some plants ( leaf phytoliths ) use silicon as a structural material.
• Radiolaria have left a geological record since at least the Ordovician times, and their mineral fossil skeletons can be tracked across the K Pg boundary.
• In 1904, Ernst Haeckel described a number of species of Radiolaria, including " Circogonia icosahedra ", whose skeleton is shaped like a regular icosahedron.
• He was particularly interested in a unicellular group of protists called diatoms, but he also studied, and named, many species of radiolaria, foraminifera and dinoflagellates.
• Ernst Haeckel ( 1834 1919 ) painted beautiful illustrations of marine organisms, in particular Radiolaria, emphasising their symmetry to support his faux-Darwinian theories of evolution.
• He was followed by Johannes Peter M黮ler and Ernst Haeckel who both described planktonic protists, radiolaria, from the Bay of Villefranche ( M黮ler 1858; Haeckel 1860 ).
• In the early 20th century, Ernst Haeckel described ( Haeckel, 1904 ) a number of species of Radiolaria, some of whose skeletons are shaped like various regular polyhedra.