FIGURES 81–94. Figs. 81–83. Hyalosynedra laevigata. Fig. 8a in Diatoms (Bacillariophyta) From Artificial Substrates And Sediments In The Caribbean Sea Off Yucatan, Mexico

FIGURES 81–94. Figs. 81–83. Hyalosynedra laevigata. Fig. 8a. SEM detail of external view of ocellulimbus. Figs. 84–86. Tabularia fasciculata. Fig. 86a. SEM detail of external view of ocellulimbus. Figs. 87–89, 94. Grammatophora marina, SEM frustule in girdle view. Figs. 90–91. G. serpentina. Fig. 90. LM valve view. Fig. 91. LM frustule in girdle view. Fig. 92. G. serpentina var. pusilla, LM frustule in girdle view. Fig. 93. G. undulata, LM frustule in girdle view. Scale bar: figs. 81–83, 85–86, 88, 94 = 1 μm, figs. 84, 87, 89–93 = 10 μm.