Assessment of serpulid-hydroid association through the Jurassic: A case study from the Polish Basin
Fig 3
Internal appearance of serpulid-hydroid association shown on micro-CT scans (A-D) and ESEM back-scattered images (E-F). A. Scan of the serpulid tube from the Lower Bathonian of Kawodrza Górna (the lateral view of the tube); black arrows show two polyp chambers with the depth of embedment visible, GIUS 8-3730/3. B. Scan of the tube from the Middle Bathonian of Gnaszyn Dolny; black arrow indicates the longitudinal section of the stolonal tube, GIUS 8-3730/2. C-D. Cross-section scans of the infested serpulid tube from the Lower Bathonian of Kawodrza Górna, GIUS 8-3730/3. In C, the arrows show the stolonal tubes in cross-section (black arrows), and longitudinal (slightly inclined) section (white arrow). In D, cross-sections of polyp chambers are visible, as well as the branching stolonal tubes connected to them. E-F. Single hydroid apertures. E. Specimen from the Lower Bathonian of Kawodrza Górna, GIUS 8-3730/3. F. Specimen from the Upper Bajocian of Mokrsko, GIUS 8-3730/1. Scale bars: 0.25 mm (A-C), 0.35 mm (D), 0.2 mm (E), 0.1 mm (F).
