Diatoms
Links
Diatoms
http://www.ucmp.berkeley.edu/chromista/bacillariophyta.html
Introduction to diatoms from UCMP.
Diatom Paleolimnology
http://www.indiana.edu/~diatom/diatom.html
Indiana University resource for diatom researchers.
Diatom Center
http://www.calacademy.org/research/diatoms/
California Academy of Sciences' diatom collections.
Eureka: Diatoms
http://hjs.geol.uib.no/diatoms/
A comprehensive site for aspects of diatom ecology, morphology, systematics, and paleobiology.