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Photographs of the adults of the hemichordate species represented in this study. (a) Ptychodera bahamensis; (b) Harrimania species; (c) Cephalodiscus gracilus individuals; (d) Cephalodiscus gracilus colony. Our results suggest that members of the family Ptychoderidae (a) form one clade of Enteropneusta, whereas the family Harrimanidae (b) plus Pterobranchia (c and d) form another.
