bmw 01/16/95

brs 09/15/99 -- revised cladogram.

Copyright information for the living sea cucumber image is as follows:

A Sea Cucumber (Pseudocolochirus axiologus) from the Smithsonian's National Zoological Park in Washington, D.C. The Zoo, with more than 3 million visitors annually, promotes awareness of the need to save vanishing animal populations worldwide.
Photo by Jessie Cohen. (c) 1991 Smithsonian Institution.

Other pictures and text: Copyright 1994 by The Museum of Paleontology of The University of California at Berkeley and the Regents of the University of California.