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The Diatoms. Diatoms are unicellular organisms that have a cell wall made of silicon dioxide and composed of two valves, which fit together with the help of a set of girdle bands.

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Science » Earth Sciences » Paleontology » Micropaleontology » Diatoms (4)

Links:

Freshwater Diatoms Microscope images of many genera, mostly collected in central Texas. www.vvm.com/~jevans/sfaquaticalgae/folderdiatoms/fdiatbc.html

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

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