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Haeckel, 1887

Spicules cylindrical, outside shell somewhat compressed, at apophyses twice as wide as inside. Large-meshed latticed sphere with wide bars. Aspinal pores large, elongated, surrounded by 2-3 cycles of smaller, oval coronal pores, surrounded in turn by cycle of larger sutural pores. Diameter of latticed sphere (without spicules): 0.3-0.4 mm; length of spicules outside of latticed sphere: 0.3-0.4 mm.

Icosaspis elegans