1. Echinoderms Current Biology
Chris T. Amemiya, Tsutomu Miyake, Jonathan P. Rast 
Current Biology 
Volume 15, Issue 23, Pages R944-R946 (December 2005)
DOI: /j.cub
Copyright © 2005 Elsevier Ltd Terms and Conditions

2. Figure 1 Interrelationships of echinoderms and related taxa.
The deuterostomes comprise three phyla: Chordata (vertebrates, cephalochordates and urochordates), Hemichordata and Echinodermata, which are more closely related to each other than to any of the protostome phyla.
Current Biology  , R944-R946DOI: ( /j.cub )
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