Figure 5. A–B in Ultrastructure and mineral composition of serpulid tubes (Polychaeta, Annelida)

Figure 5. A–B, Vitreotubus digeronimoi, simple prismatic structure, polished, and treated with GA solution for 5 min. A, cross section. B, longitudinal section. C–D, Pomatoceros triqueter, lamello-fibrillar structure. C, cross section. D, longitudinal section. E–F, Floriprotis sabiuraensis, spherulitic lamello-fibrillar structure, inner tube layer. E, cross section. F, longitudinal section. Samples (C–F) were treated with 1% acetic acid for 2 min. Abbreviations: exter, exterior; ginc, growth increments.