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Systematics of the Ciliata (Site not responding. Last check: 2007-10-26) |
 | | Ciliate Diversity : Above are shown representatives of four major groups of Ciliata. |
 | | From left to right, these are Didinium (Litostomatea); Stentor (Spirotrichea); Paramecium (Nassophorea); and Vorticella (Oligohymenophorea). |
 | | There are an estimated 7,500 species of ciliate known. |
| www.ucmp.berkeley.edu /protista/ciliata/ciliatasy.html (110 words) |