FIGURE 4 in A modern look at the Animal Tree of Life*

FIGURE 4. Examples of deuterostome animals. (A) The enigmatic Xenoturbella bocki (photograph by G.W. Rouse). (B) The hemichordate Ptychodera bahamensis (photograph by G. Giribet). (C) Three species of crinoid echinoderms (feather stars) on a gorgonian specimen (photograph by G.W. Rouse). (D) The lancelet Branchiostoma caribaeum (photograph by G.W. Rouse).