Genus: Body fills porous siliceous envelope, a pseudopodium (axopodium) through each pore;
on a stalk (How to know the protozoa, 1979).
Organic capsule with polygonal pores; cell body near the capsule; colonial or single
(Illustrated Guide, 1985).
Species:
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C. elegans Leidy: Filopodia in early stages later become axopodial after skeleton is formed; on a stalk 150-200 μm tall; fresh water (How to know the protozoa, 1979).