Radiolaria


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Related to Radiolaria: Diatoms
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Synonyms for Radiolaria

References in periodicals archive ?
Echinoid remains, Stromatholite, Radiolaria, Mollusca fragments, Gastropoda, Serpulids, Corals, Stromatoporidea
Campanian radiolaria were noticed in scarce radiolaritic intercalations (Hein et al.
As for that name radiolarian, which has a vaguely musical ring to it, Martin discovered a science book containing illustrations of creatures called radiolarians or radiolaria.
Opal of organic origin is usually an agglomerate of the siliceous shells of radiolaria or diatoms (called diatomites after fossilation)--each with the unique size and pattern of the internal pore structure (Figure1a).
A slowly accumulating abysmal deposit covering some 55,000,000 square miles of the deepest part of the ocean bottom and consisting of the insoluble residual material of volcanic and meteoritic or cosmic dust mingled with nodules of manganese oxide, crystals of the zeolite phillipsite, sharks' teeth, the siliceous tests of Radiolaria, and other resistant organic debris
Some colonial species of radiolaria even form gelatinous pseudopodial matrices several centimeters in diameter and more than 1 m in length.
The group's work on supramolecular synthesis of mesostructured silica and aluminum phosphate materials with morphologies that resemble biomineralized structures such as diatoms and radiolaria (Figure 3: coined morphosynthesis) represented a first for materials chemistry.
31 NATURE, a team led by Schieber shows that quartz silt may have instead emerged from dissolved skeletons of tiny organisms, radiolaria and diatoms, that lived 370 million years ago.
1988) based much of their paleoenvironmental reconstruction on a sea-surface paleotemperature curve derived from shifts in fossil radiolaria species preserved in varved sediments at the bottom of the Santa Barbara Channel, and subsequently other archaeologists also have used this curve.
An overall 50 percent decrease in the biogenic silica to carbonate flux ratio from 1978 to 1991 is superimposed upon pronounced seasonal flux cycles of biogenic carbonate (synthesized by coccolithophorids and foraminifera) and silica (synthesized by radiolaria and diatoms).
2008: Upper Triassic to Cretaceous radiolaria from Nicaragua and northen Costa Rica--the Mesquito Composite Oceanic Terrane.
However, the diversity of Radiolaria shows a different pattern, remaining low throughout the Permian and at the beginning of the Triassic, then increasing noticeably from the Ladinian.
Here, the chemist has shown how to make materials that resemble the skeletons of naturally occurring diatoms and radiolaria, providing the conceptual missing link between inorganic hydrothermal synthesis and the world of biominerals.
Microorganisms such as diatoms and radiolaria grow the decorative, mineralized outer shells to protect their innards.