California Academy of Sciences Diatom Collection - An extensive resource on diatom taxonomy, primarily focused on recent freshwater diatoms of the United States. www.calacademy.org/research/diatoms
Cohn Lab Center For Diatom Research - Dedicated to expanding research and general knowledge of diatoms, includes basic introductions about diatoms, and information about the laboratory and the research undertaken. condor.depaul.edu/~diatom
Freshwater Diatoms - Microscope images of many genera, mostly collected in central Texas. www.vvm.com/~jevans/sfaquaticalgae/folderdiatoms/fdiatbc.html
Great Lakes Diatoms - Collection of images, classified by morphology and by genus. www.umich.edu/~phytolab/GreatLakesDiatomHomePage/top.html
Introduction to Bacillariophyta (the Diatoms) - Information about the fossil record, life history and ecology, systematics, and morphology. www.ucmp.berkeley.edu/chromista/bacillariophyta.html
