Changes

==Radiolarians==

==Radiolarians==

[[file:applied-paleontology_fig17-5.png|300px|thumb|{{figure number|1}}See text for explanation.]]

[[file:applied-paleontology_fig17-5.png|300px|thumb|{{figure number|1}}Typical radiolarians.]]

Radiolarians are planktonic protists that occur primarily in open marine, deep-water settings. They are useful time indicators and are found in rocks of Cambrian to Holocene age. They may be the only  

Radiolarians are planktonic protists that occur primarily in open marine, deep-water settings. They are useful time indicators and are found in rocks of Cambrian to Holocene age. They may be the only