Suto, I. (2003). Taxonomy of the marine diatom resting spore genera Dicladia Ehrenberg, Monocladia gen. nov. and Syndendrium Ehrenberg and their stratigraphic significance in Miocene strata. Diatom Research. 18(2): 331-356.
Taxonomy of the marine diatom resting spore genera Dicladia Ehrenberg, Monocladia gen. nov. and Syndendrium Ehrenberg and their stratigraphic significance in Miocene strata