Description
Pyramidal tents or elevations formed by rodlets united at the apex , arising from the surface of the lattice work , with internal axial rods , in some species prolonged into a crowned radial spine .
Type species
Figures
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Raw text
Pyramidal tents or elevations formed by rodlets united at the apex , arising from the surface of the lattice work , with internal axial rods , in some species prolonged into a crowned radial spine .