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Fig. 6 | BMC Evolutionary Biology

Fig. 6

From: Metamorphic remodeling of morphology and the body cavity in Phoronopsis harmeri (Lophotrochozoa, Phoronida): the evolution of the phoronid body plan and life cycle

Fig. 6

Details of metamorphic remodeling of external morphology in Phoronopsis harmeri. Photographs according to SEM (A-B, D-G) and semithin section (c). a Tentacles (t) of metamorphic animal with continuous rope of postoral ciliated band (rpb). b A portion of tentacle with degenerated epithelium of postoral ciliated band: line of former location of the postoral ciliated band is indicated by arrowheads. c Pair of latero-frontal ropes of postoral ciliated band is evident on each tentacle. d Tentacles after remodeling: line of former location of the postoral ciliated band is indicated by arrowheads. e Anterior portion of the body in metamorphic animal with partly consumed preoral lobe (pl) and spacious oral disc (od) with peeled epithelium (pe). f A portion of the oral disc is covered by basal lamina (bl). g Cross section of juvenile tentacles (t) with erythrocytes (er). Abbreviations: c2 – mesocoel; m – mouth; tv – tentacle vessel

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BMC Ecology and Evolution

ISSN: 2730-7182

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