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Prinicpal types of Trochophore: 392 Mollusc, 393 Phoronida, 394 Bryozoan, 395 Annelid.
From: ‘L’ embryologie comparée’ by Louis Roule. Published 1894
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General structure of a Trochophore larva
From: ‘L’ anatomie comparée des animaux basée sur l’embryologie’ par Louis Roule. Published 1898
