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Haeckel, 1887

Shell with 52 sutures and 52 sutural meshes; with 4 hexagonal and 16 pentagonal plates. Aspinal pores round and small, surrounded by 5-6, twofold smaller sutural pores (one at each suture). Radial spicules quadrangular, prismatic, section external to lattice shell 2-3 times longer than section within shell. Diameter of shell: 0.12 mm, of parmal pores: 0.008 mm, of sutural pores: 0.004 mm.

Dorataspis macracantha