Figure 5 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)

Figure 5. Scanning electron microscope images of transverse sections of dorsal shells. Images are from near the middle of each section and therefore are approximately perpendicular to the shell anterior–posterior axis. Labels indicate primary layer (PL) and secondary layer (SL). Measurements are from various mid-section locations, not only those in images. Scale bars: A–C, E, F = 200 Mm, D = 100 Mm. If viewed on screen or printed as a full-page image the secondary fibres may appear too small to be clearly visible. Therefore the original figures (~760 dpi) are also available in Appendix S2A–F. A, Coptothyris sp. Shell total thickness 748–1130 Mm (ribs), 474–527 Mm (grooves). Mean rib height 632 ± 193 Mm (N = 7). PL thickness 49.4–64.9 Mm (ribs), 24.4–26.6 Mm (grooves). SL thickness 757–951 Mm (ribs), 472–480 Mm (grooves). B, Terebratalia transversa. Shell total thickness 883–982 Mm (ribs), 580–784 Mm (grooves). Mean rib height 250 ± 89 Mm (N = 8). PL thickness 60–75.3 Mm (ribs), 44.2–60.7 Mm (grooves). SL thickness 850–929 Mm (ribs), 635–684 Mm (grooves). C, Magellania venosa. Shell total thickness 700–960 Mm. PL thickness 32.1–41.9 Mm. SL thickness 654–918 Mm. D, Terebratulina retusa. Shell total thickness 227–254 Mm (ribs), 163–173 Mm (grooves). PL thickness 30.6–64 Mm (ribs), 7.7–12.9 Mm (grooves). SL thickness 170–189 Mm (ribs), 136–164 Mm (grooves). E, Terebratella dorsata. Shell total thickness 873–973 Mm (ribs), 803–848 Mm (grooves). Mean rib height 79.1 ± 18.4 Mm (N = 6). PL thickness 42–62.5 Mm (ribs), 28.6–39.1 Mm (grooves). SL thickness 850–929 Mm (ribs), 768–797 Mm (grooves). F, Terebratella sanguinea. Shell total thickness 338–414 Mm (ribs), 281–333 Mm (grooves). Mean rib height 56.9 ± 14.6 Mm (N = 3). PL thickness 31.4–46.5 Mm (ribs), 26.3–36.3 Mm (grooves). SL thickness 361–365 Mm (ribs), 259–285 Mm (grooves).