Nassellaria is an order of radiolarians. There are 395 species of Nassellaria, in 176 genera and 15 families. This order has been around since the upper devonian epoch. It includes groups like Trissocyclidae, Theoperidae, and Artostrobiidae. Dead Nassellaria form siliceous oozes. They are omnivores. They are passively mobile organisms.
EOL has data for 10 attributes, including: