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6 results for “Terebratelloidea”
Figure 3. Chronogram. The maximum clade credibility tree amongst 9000 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)
Figure 3. Chronogram. The maximum clade credibility tree amongst 9000 trees from an uncorrelated lognormal relaxed clock analysis of the rDNA alignment. Nodes are labelled A–R and show mean node ages and 95% highest posterior density (HPD) ranges as wide black bars. See Table 1 for details of SDmean, 95% HPD confidence limits of mean ages, descriptions of nodes and of mean age agreement with external ages. Vertical lines labelled NZ (New Zealand), MAG (Magellanic), Laq (laqueoid) and Short (short-looped terebratulidine) mark the respective clades and the proximate and more distant outgroups. Evolutionary model for dating analysis: 18 taxa, 2833 sites, general time reversible with estimated frequency of invariant sites and gamma rate distribution (four rate categories) with empirical base frequencies; uncorrelated lognormal distribution. Priors: substitution rates, Jefferies; site model alpha and invariant, Normal, mean = 0.7, SD = 0.1, initial = 0.7; tree model root height, lognormal logx mean = 2.39, SD = 0.5; defined taxon sets, default tree prior. Markov chain Monte Carlo chain 107 cycles, sampled every 103. TreeAnnotator was used to identify the maximum clade credibility tree of 9000 trees after 1001 trees were discarded as burnin.
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).
Figure 2 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)
Figure 2. Maximum likelihood (ML) phylogram based on the cytochrome oxidase subunit 1 (cox1; all nucleotide sites) alignment, with bootstrap %. In the Akaike information criterion-selected best-fit ML model (Hasegawa-Kishino-Yano, with estimated frequency of invariable sites, Pinvar = 0.45 and gamma distribution of rates, shape parameter 0.92). Labels as in Figure 1.
Figure 1 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)
Figure 1. Maximum likelihood (ML) phylogram based on rDNA sequences. Taxa with ribbed shells have underlined names. Vertical lines labelled NZ (New Zealand), MAG (Magellanic) and Laq (laqueoid) mark the respective ingroup clades and the outgroup. ML tree constructed by heuristic search with tree bisection-reconnection branch exchange, rooted with laqueoid outgroups and using the Akaike information criterion-selected alignment-specific general time reversible ML model with gamma and invariant site corrections, gamma shape = 0.78 Pinvar = 0.80. With bootstrap support (%) based on 1000 pseudoreplicates using ML distances analysed by BioNJ. The maximum parsimony and ML trees had identical topology and similar bootstrap % (parsimony length = 1169, consistency index = 0.95, retention index = 0.84).
Figure 4 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)
Figure 4. Macrophotographs of Terebratella spp. individuals. A, B, dorsal and anterior views of an individual of Terebratella dorsata. C, dorsal view of a second individual of Terebratella dorsata. D, E, dorsal and anterior views of an individual of Terebratella sanguinea. F, dorsal view of a second individual of Terebratella sanguinea. Scale bars = 1.0 cm.
Figure 6 in Vicariance and convergence in Magellanic and New Zealand long-looped brachiopod clades (Pan-Brachiopoda: Terebratelloidea)
Figure 6. Growth trajectories. Scattergrams of length (L) and width (W) in samples of Magellania venosa (N = 31), Terebratella dorsata (N = 36) and Terebratella sanguinea (N = 63), with linear regression lines (not constrained to pass through zero). Regression accounts for 82 to 92% of the size variation. See text for details. t-tests for differences in slope found a significant difference (P = 0.01) between Magellania venosa and Terebratella dorsata and between each of them and Terebratella sanguinea (P << 0.001).
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