D

• Day Length 107 109 111

• Diatoma 44

• Diatomella, 8

• Diatoms, Studies on Australian and New Zealand, II Normally Epontic and Benthic Genera, by L. H. Crosby and E. J. Ferguson Wood. 1

• Dictyoners 45

• Dimerogramma 45

• Diploneis 25