21. Echinoderm larvae, like chordates, are bilaterally symmetric.22. His name is that of the genus of echinoderms to which starfish belong. 23. The waters near Sebuku have fewer echinoderms than further into the Lampung Bay. 24. In his zoological research he mainly dealt with coelenterata, echinoderms and arthropods. 25. See this diagram of early echinoderms and relatives from this article on their evolution 26. The echinoderms are important both ecologically and geologically. 27. Like other echinoderms , crinoids have pentaradial symmetry. 28. Some echinoderms locomote using the many tube feet on the underside of their arms. 29. The echinoderms are important both biologically and geologically. 30. The group Ascothoracida contains about 100 species, all parasites of coelenterates and echinoderms .
