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).