Description
Internal shell latticed , with 60 to 90 radial spines ; external shell pentagonal meshed; from each nodal point emerges a smooth radial spine bearing a verticil of 3 by-spines.
Type species
Figures
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Raw text
Internal shell latticed , with 60 to 90 radial spines ; external shell pentagonal meshed; from each nodal point emerges a smooth radial spine bearing a verticil of 3 by-spines.