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. Radiolarian Database, Nagoya University...
www.ucmp.berkeley.edu/protista/radiolaria/rads.html www.ucmp.berkeley.edu/protista/radiolaria/rads.html
Diversity of Radiolarian form : Though a radiolarian is a single-celled organism, each species is capable of producing its own distinctive skeleton of crystal silica. Skeletons may be spherical or cone-shaped, and may have spines or fins projecting from the surface.
www.ucmp.berkeley.edu/protista/radiolaria/radmm.html www.ucmp.berkeley.edu/protista/radiolaria/radmm.html
Radiolarian; Magnification: X 750 After millions of years of radiolarian shells "raining down" on the sea floor, they accumulate in great quantities. Much of the sea floor of the deep oceans are covered in this radiolarian "ooze".
www.mos.org/sln/sem/radio.html
German biologist Ernst Haeckel produced exquisite (and perhaps somewhat exaggerated) drawings of radiolaria, helping to popularize these protists among...
en.wikipedia.org/wiki/Radiolarian en.wikipedia.org/wiki/Radiolarian
Discover sites dedicated to the Radiolarians, pelagic microorganisms known for their beautiful and intricate exoskeletons. Explore sites featuring photo...
dir.yahoo.com/Science/Biology/Protista/Radiolarians/ dir.yahoo.com/Science/Biology/Protista/Radiolarians/
The polycystines are a group of radiolarian protists. They include the vast majority of the fossil radiolaria, as their skeletons are abundant in marine...
www.absoluteastronomy.com/topics/Radiolarian www.absoluteastronomy.com/topics/Radiolarian
Oct 20, 2009 Although it is the possession of a central capsule that traditionally has been used to distinguish radiolarians from other protists,
tolweb.org/Polycystina
The Jurassic variety are probably some type of radiolarian-like protist and may have nothing at all to do with the Paleozoic acritarchs. Most radiolarian work in the Mesozoic is limited to identifying taxa for stratigraphic purposes. Surprisingly little has been done on their paleoecology or evolution.
www.palaeos.com/Mesozoic/Jurassic/Jurassic.htm
inshore offshore play science coral-reefs crabs ag snámh news think imeachtaà September 15, 2009 at 5:56 pm · Filed under General, Global and tagged: Ireland, marine, plankton, protist, radiolarian...
irishmarinelife.com/
Gromia oviformis Dujardin is a common marine protist characterised by a large, globular test and filose pseudopodia. First considered a foraminifer, Gromia was later placed within the Filosea and recently included among amoebae of uncertain affinities.
www.ncbi.nlm.nih.gov/pubmed/12389814