Radiolaria (Radiolarians) is a phylum of rhizarians. There are 2838 species of Radiolarians, in 862 genera and 161 families. This phylum has been around since the cambrian stage 4 age. It includes groups like Cadiidae. Dead Radiolarians form siliceous oozes. They are omnivores. They are passively mobile organisms.
EOL has data for 26 attributes, including:
The environments in which many radiolarians species are known to live. Select an environment to see its radiolarians species checklist.