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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

[ref. ID; 4884 (K.A. Mikrjukov, 1996)]

Family Raphidiophryidae (ref. ID; 4884 original paper)


Centrohelid heliozoa with a periplast comprising siliceous elements. The latter are usually represented by only tangential spicules or scales. Radial elements (if present) lack a shaft and have a trumpet- or funnel-like shape; they occupy external periplast layers, while tangential scales lie in internal ones. The family Raphidiophryidae should include four genera: Parasphaerastrum Mikrjukov, Polyplacocystis Mikrjukov, Raphidiophrys Archer, emend. Mikrjukov, and Raphidocystis Penard.