Roule (20) thlnks that the Phoronldae should be placed next to the Bryozoa.1n a natural classjflcatlon. He does not eon31der that they have any afflnlty to the Enteropneusta but from a study of the early stages of development, he finds that they are belated to the true Chordata (tunicates and Verte brates). He says, fembryon de Vert�br� est une Trochophore renvers�e.
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