EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
"Diatoms are algae of the Phylum Ochrista that lack flagella. They have
a jewel-like appearance. They play an extremely important role in
aquatic food webs in that they are the second most abundant component of
marine plankton (after blue-green algae).
Gould, J. and W.Keaton. 1996. Biological Science. W.W. Norton and Company. New York, New York.