 
 
|  Genus: Free-living; skeleton with or without coat; cuirass made of scales and of the basal part 
of the spicules; coat indistinguishable (Illustrated Guide, 1985).  
Siliceous scales arranged tangentially and radiating siliceous spines with pointed or 
bifurcated ends; (Kudo, 1966). Species: 
 | 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400 :
 150 μm; x 400 : 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
