Spicule Lenght (µm) Width (µm) n min mean s max mean s MNRJ 10320 Microdiactine 41.3 46.6 2.8 48.6 1.2 0.0 6 Diactine 62.7 198.4 73.3 346.5 6.7 1.1 30 Triactine Paired Unpaired 66.0 83.1 69.3 93.3 9.5 13.4 105.6 122.1 6.2 0.8 5.8 0.9 30 30 Tetractine Paired 69.3 85.3 7.1 99.0 6.6 0.6 30 Unpaired 66.0 95.0 13.3 118.8 6.3 0.6 30 Apical 26.7 34.0 6.9 41.3 4.1 0.7 5